Iraqi spies warned the West of an ISIS suicide bomber threat the day before the Paris atrocities, it has been revealed, as more details of major intelligence failures begin to emerge.

The US-led coalition in Syria was apparently told by Iraqi security sources that 24 extremists were involved in the terror operation planned in the ISIS capital Raqqa and it would involve 19 attackers including five others including bombmakers and planners.

No detail was given of when or where an attack might take place.

But Islamic State group leader Abu Bakr al-Baghdadi was said to have ordered his followers to immediately launch gun and bomb attacks and take hostages inside the countries of the coalition fighting them in Iraq and Syria.

A senior French security official said that French intelligence gets such warnings 'all the time' and 'every day', despite Iraqi intelligence operatives claiming they had shared key details.

It has also emerged that Turkey's authorities foiled a plot to stage a 'Jihadi John revenge attack' in Istanbul - involving a high-profile British jihadist - on the same day as the deadly massacre in Paris.

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Vital clues were missed that could have averted the Paris atrocities, it was feared last night. Above, police made arrests in Belgium in connection with the terror attacks, which left 129 dead

Greek authorities believe that two of the gunmen sneaked into Europe posing as a refugee from Syria, with one registering in Leros on October 3

An official, speaking on condition of anonymity said: 'We believe they were planning an attack in Istanbul on the same day as the Paris attacks. Initial investigation shows we foiled a major attack.'

Police on Friday detained five people in Istanbul including a suspected close associate of ISIS executioner Jihadi John, who Washington believes was likely killed in a drone strike in Syria.

Aine Lesley Davis - like Jihadi John a British citizen who guarded foreign prisoners in Syria - was among the ISIS suspects detained in a swoop in Istanbul.

Davis, 30, a London-born British Muslim who turned to Islamist militancy, has been described in the past as a key figure in the network of Islamic State in Syria.

Davis and the other four fellow jihadists had crossed into Turkey from Syria at an unspecified date.

Turkish authorities are investigating if the foiled plot had any links with the Paris attacks which killed 129 people, the Turkish official said.

Meanwhile, the key details Iraqi intelligence officials claim to have shared with coalition countries included how the attackers were trained for such an operation and sent back to France from Raqqa, the Islamic State's de-facto capital.

The officials also said that a sleeper cell in France then met with the attackers after their training and helped them to execute the plan.

There were 24 people involved in the operation, they said - 19 attackers and five others in charge of logistics and planning.

None of these details have been corroborated by officials of France or other Western intelligence agencies.

Meanwhile, other vital clues were missed that could have averted the Paris atrocities it was feared last night, as it was revealed that France's authorities possessed information that militants were said to be planning attacks on French concert halls from as far back as August.

At least one of the terrorists was a Parisian who had been on a terror watch list for five years, but was not being monitored closely enough to be stopped before he took part in the murderous attack. Above, French fire brigade members aid an injured individual near the Bataclan concert hall

129 people died in the horrifying attacks, which French authorities believe were carried out by at least two terrorists who came from Syria through Greece

Victims of the attack lay on the pavement outside La Bell Equipe restaurant. As details of the killers’ identities began to emerge yesterday, Corinne Narassiguin, spokeswoman for France’s ruling Socialist Party, admitted: ‘Obviously there was a failure of intelligence’

Dead and wounded people lie on the pavement outside the Cafe Bonne Biere in Paris following the attacks

A wounded man is helped by a passer-by as he lies outside a cafe following the shooting in central Paris

The tip-off came from a 30-year-old man who was detained on his way back from Syria.

It has also emerged that:

A heavily armed suspect was stopped on his way to the French capital more than a week ago but German police who uncovered an arsenal of weapons in his car did not tell anti-terror chiefs.

At least one of the terrorists was a Parisian who had been on a terror watch list for five years, but was not being monitored closely enough to be stopped before he took part in the murderous attack.

Greek authorities believe that two of the gunmen sneaked into Europe posing as a refugee from Syria – heightening fears that not enough security checks are being carried out on migrants.

As details of the killers’ identities began to emerge yesterday, Corinne Narassiguin, spokeswoman for France’s ruling Socialist Party, admitted: ‘Obviously there was a failure of intelligence.’

She said the French government had recently voted through new measures to improve surveillance of terror suspects, with 2,000 new posts being created, but added: ‘Unfortunately all these measures are not yet fully operational.’

French fire officer helped an injured man away from the scene of the attack at the Bataclan concert in Paris on Friday night

A victim is wheeled out of the Bataclan concert hall on Saturday morning after hundreds of emergency service workers rushed to the scene following Friday's massacre

Supporters of both France and Germany were held in the stadium until they could be safely evacuated. Last night, French Football Federation president Noel Le Great admitted he was concerned about safety at next summer’s month-long European Championships

PARIS MASSACRE: WHAT WE KNOW SO FAR ABOUT DEADLY TERROR SIEGE At least 129 people are dead, and another 352 injured, after three teams of jihadis struck the Stade de France football stadium, a handful of bars and cafes, and then finally the Bataclan concert hall. FIRST TWO ATTACKS: STADE DE FRANCE The attacks began at 8.17pm GMT at the Stade de France where the French football team was hosting Germany in an international friendly.

The game was being watched by 80,000 spectators, among them was President Francois Hollande who had to be evacuated from the stadium.

The first explosion, a suicide bombing, was at an entrance to the stadium. A suicide bomber approached the gate with a match ticket when he was frisked by a security guard who turned him away.

He backed away from the gate and detonated his vest at about 8.20pm GMT near Gate D of the stadium, killing one other person. A passport with the name Ahmed Almuhamed, 25, from Syria, was allegedly found nearby.

A second suicide bomber, Bilal Hadfi, 20, blew himself up near Gate H several minutes later. No one else was reported killed. Hadfi is said to have fought with ISIS in Syria. THIRD ATTACK: LE PETIT CAMBODGE AND LE CARILLON BAR At 8.25pm GMT a separate team of gunmen arrived in a Black Seat and attacked diners at popular Cambodian restaurant Le Petit Cambodge and Le Carillon bar in the trendy Canal Saint-Martin area of eastern Paris, killing 15. Timeline of events: Eight bombers carried out the devastating attacks on Friday night, leaving 129 people dead and another 352 injured FOURTH ATTACK: LA CASA NOSTRA PIZZERIA AND LA BELLE EQUIPE BAR The same unit then drove about 500 yards to La Casa Nostra pizzeria and opened fire on diners on the terrace of the restaurant, killing at least five people.

From there, the militants drove around a mile south-east – apparently past the area of the Bataclan concert venue – to launch another attack, this time on La Belle Equipe bar in Rue de Charonne. At least 19 people died after the terrace was sprayed with bullets at 8.38pm GMT. The attackers then drove off. FIFTH ATTACK: CAFÉ ‘COMPTOIR VOLTAIRE’ Five minutes later, Ibrahim Abdeslam, 31, set off a suicide vest outside the outside cafe 'Comptoir Voltaire' on the Boulevard Voltaire and close to the Bataclan theatre. He hired a black Seat car used in the attack. SIXTH ATTACK: BATACLAN MUSIC HALL At 8.49pm GMT, the third group (believed to be three men and a woman) armed with AK-47s stormed the Bataclan music hall and began shooting members of the crowd. Survivors claim three blew themselves up and a fourth person was shot dead by police before they could detonate their bomb. SEVENTH ATTACK: NEAR STADE DE FRANCE At around 8.50pm GMT a third blast took place near the Stade de France, this time by a McDonald’s restaurant on the fringes of the stadium. The boom caused terror among spectators who had already been attempting to flee the stadium following the first two explosions. The attacker who detonated his suicide vest was identified as a 20-year-old French man living in Belgium. Tearful members of the public view flowers and tributes on the pavement near the scene of the concert hall massacre on Friday AFTERMATH: On Saturday morning, ISIS claimed responsibility for the attacks across Paris, saying 'eight brothers wearing explosive belts and carrying assault rifles' conducted a 'blessed attack on... Crusader France'.

On Saturday afternoon, three people travelling in a grey VW Polo were arrested at the French/Belgian border when police traced the car after it was sighted outside the Bataclan theatre at the time of the attacks.

One of the Stade de France suspects was found carrying a Syrian passport under the name Ahmed Almuhamed who travelled to France as a migrant through Greece on October 3. Ferry tickets reveal he travelled with another man named as Mohammed Almuhamed.

However, the French minister of justice Christiane Taubira said on Sunday that the passport under the name Ahmed Almuhamed was a fake.

Omar Ismaël Mostefai, 29, from Courcouronnes, Paris was also named as a Bataclan suicide bomber. The petty criminal and father-of-one was known to police as a radical and had travelled to Algeria and Syria. He was identified by the fingerprint on a severed digit found after he detonated his suicide belt.

Mostefai is believed to have been radicalised by a Belgian hate preacher of Moroccan descent claimed to have regularly preached at his mosque in South West France. His father, a brother and other family members have been held and are being questioned.

The black Seat Leon used by the terrorists who murdered diners outside the Casa Nostra pizza restaurant and the La Belle Équipe cafe was found abandoned 20 minutes away in Montreuil with a cache of weapons inside.

Seven people were detained in Belgium linked to the atrocities - three at the border and four in Brussels. Five are from the Molenbeek area of Brussels known as a 'den of terrorists'.

Iraqi spies warned the West of an ISIS suicide bomber threat the day before the Paris atrocities, it was revealed on Sunday, as more details of major intelligence failures began to emerge. The US-led coalition in Syria was apparently told by Iraqi security sources that 24 extremists were involved in the terror operation planned in the ISIS capital Raqqa and it would involve 19 attackers including five others including bombmakers and planners. No detail was given of when or where an attack might take place.

It has also emerged that Turkey's authorities foiled a plot to stage a 'Jihadi John revenge attack' in Istanbul - involving a high-profile British jihadist - on the same day as the deadly massacre in Paris.

From as far back as August, France's authorities possessed information that militants were said to be planning attacks on French concert halls after a tip-off was received from a 30-year-old man who was detained on his way back from Syria.

On Sunday night there were 42 people still said to be in intensive care in hospital following Friday's terrorist attacks. LATEST DEVELOPMENTS: French police are still hunting for three gunmen on the run, including Brussels-born Frenchman Salah Abdeslam, and an ISIS bombmaker likely to have made the suicide vests.

An international arrest warrant has been issued for Abdeslam, 26, who is accused of renting a Volkswagen Polo used by the suicide bombers. He is one of three brothers believed to be at the heart of the eight-strong ISIS cell.

It emerged on Sunday night that police found Abdeslam near the Belgian border early Saturday but let him go after he showed them his ID card. Officers pulled over the car being driven by Abdelslam on Saturday morning on the A2 motorway between Paris and Brussels. Two other men were also in the Seat car. At the time, officers in Paris knew that Abdeslam had rented the car used by the killers which had been abandoned near the theatre but the information had not been transmitted to those responsible for conducting the border checks.

His brother Ibrahim, 31, blew himself up in a solo attack outside cafe Comptoir Voltaire after renting a black Seat found abandoned today filled with AK-47s and ammunition. A third sibling, named as Mohamed Abdeslam, has been arrested in the Belgian capital.

On Sunday evening the French defence ministry announced that the country's warplanes had bombed Islamic State's stronghold in Syria's Raqa, destroying a command post and a training camp, the defence ministry said. Ten fighter jets were involved, dropping 20 bombs. Advertisement

French intelligence and security services had been reorganised in the wake of the Charlie Hebdo massacres, which left 16 dead in January. It emerged that the brothers behind the killings, Cherif and Said Kouachi, were well known to the authorities and were being watched – but surveillance was called off just six months before they launched their attack.

Since then counter-terrorist forces say they have thwarted several plots and in August passengers overpowered a gunman who opened fire on a high-speed train bound for Paris.

But it is feared there was a fatal breakdown in communication between European law enforcement agencies earlier this month. During a routine check of a VW Golf on the Salzburg to Munich autobahn on November 5, police discovered a ‘professionally built’ secret compartment crammed with weaponry and munitions.

‘An inspection of the glove compartment revealed a revolver,’ said a security source. ‘The compartment itself was damaged and behind it could be seen something sticking out – it was the barrel of an AK-47 hidden in the engine compartment.’

Eventually discovered in the hideaway built into the car bodywork and welded over were a further seven AK-47 assault rifles of the type used in the Parisian bloodbath, complete with full magazines. Five pistols, seven hand grenades, fuses, detonators and a revolver completed the mini arsenal. The destination programmed into the driver’s sat-nav was Paris. The 51-year-old driver, a Muslim from Montenegro, was arrested and held in custody but has refused to talk.

The country has long been a recruiting ground for Islamic State (IS) terrorists in the Balkans and some 300 individuals there are believed to be under surveillance. But although the arrest by Bavarian police was reported to Interpol, details were not given to anti-terror specialists in Berlin who may have been able to join up the dots with their French counterparts and so prevent the Paris massacre.

‘There will be hell to pay about this in the coming days,’ said an intelligence source.

A mourner pays his respects outside the Le Carillon restaurant, the site of one of the attacks

Belgian police arrested three suspects as they tried to cross the border from France on Friday night. Above, police officers investigate the scene in the streets of Molenbeek, Brussels

Visitors are turned away from a closed Disneyland Paris yesterday as soldiers patrolled outside in full uniform

French police conduct a control at the French-German border in Strasbourg, France, the morning after a series of deadly attacks

Concentrating: An officer clutching a gun stares into the distance as tourist destinations across the city were closed on Saturday

VITAL CLUES MISSED IN EUROPE IN THE LEAD UP TO THE PARIS MASSACRE A series of vital clues appear to have been missed that could have averted the Paris atrocities. Iraqi intelligence warned US-led coalition countries of an imminent assault the day before the Paris attacks, it has emerged. At least one of the terrorists was a Parisian who had been on a terror watch list for five years, but was not being monitored closely enough to be stopped before he took part in the murderous attack. Greek authorities believe that two of the gunmen sneaked into Europe posing as a refugee from Syria – heightening fears that not enough security checks are being carried out on migrants. In May this year, The Mail on Sunday revealed the concerns of security analysts that Islamic State extremists were being smuggled into Europe among refugees crossing the Mediterranean. More than a week ago, a heavily-armed suspect was stopped in Germany on his way to Paris. Hidden in his car, police found a terrifying arsenal, including seven Kalashnikov assault rifles and seven hand grenades. The destination programmed into his satnav system was Paris but officers failed to alert anti-terror police. The 51-year-old driver, a Muslim from Montenegro, was arrested and held in custody but has refused to talk. In August, French intelligence detained a 30-year-old man on his way back from Syria who said militants were planning attacks on French concert halls. Prosecutors also said the terrorists used an improved explosive known as TATP, or triacetone triperoxide, which also was used in the 2005 bombings in London and were likely to be homemade with ingredients usually traced by the secret services. French intelligence and security services had been reorganised in the wake of the Charlie Hebdo massacres, which left 16 dead in January. A former senior intelligence officer very familiar with France said he and a lot of French intelligence officials think that after two internal services — the Central Directorate of General Intelligence (RG) and the Directorate of Territorial Surveillance (DST) — were merged, it created a larger, but far weaker, General Directorate for Internal Security. Alain Charret, an expert on France's surveillance system, said it was hard for the military to be everywhere and for intelligence to predict everything, 'but the reason why it is usually difficult to track people is because one or two people on their own are involved — here, it seems like it was a big group of organized people, so it should have been tracked more easily.' Advertisement

Bavaria’s state premier Horst Seehofer said on Saturday: ‘We have an arrest where there is reasonable expectation that it may be to do with the things that happened in Paris.’

Meanwhile, at least one of the terrorists who struck on Friday night had been on ‘Fiche S’, a watch list of known extremists.

One of the gunmen who stormed the Bataclan concert hall was identified by his finger as a 29-year-old named as Omar Ismaël Mostefai.

The homegrown terrorist from Courcouronnes, Paris, was said to have been radicalised by a Brussels-based hate preacher who spoke regularly at his French mosque.

Mostefai, who has a large number of convictions for petty crime but not extremist activity, is said to have a young daughter.

The cell responsible for the massacre travelled to IS heartlands for training, while at least one member re-entered Europe last month via a Greek island among refugees fleeing the chaos of Syria.