AN IS fanatic knifed to death a French police commander and his wife — then filmed himself amid the carnage in their home warning of an atrocity at Euro 2016.

Larossi Abballa, 25, repeatedly stabbed Jean-Baptiste Salvaing after following him home before forcing his way into his house to murder wife Jessica in front of their three-year-old son.

17 Larossi Abballa, 25, murdered a French police commander and his wife — then filmed a chilling video in their home

Abballa then put sickening images of the killings on Facebook Live along with footage of himself saying: “We’re keeping another surprise for the Euros but I won’t say anything more.

“We will come and find you the way I have found this policeman at his house.”

Abballa was shot dead while screaming “Allahu Akbar!” by police officers who stormed the house in Magnanville, near Paris, and saved the three-year-old.

17 Abballaa stabbed Jean-Baptiste Salvaing to death after following him home, then broke into his house and killed his wife Jessica Scheider Credit: AFP

Abballa, 25, knifed 42-year-old Jean-Baptiste nine times outside his home on Monday evening before forcing his way inside and cutting 36-year-old Jessica’s throat.

He telephoned police to pledge allegiance to ISIS, then posted harrowing pictures and videos of the murders along with an image of their son cowering behind a sofa.

17 Police officers shot him dead as he screamed: 'Allahu Akbar!' Credit: pixel GRG

We’re keeping another surprise for the Euros but I won’t say anything more. We will come and find you the way I have found this policeman at his house Larossi Abballa

A message beside the picture read: “I still don’t know what I’m going to do with him.”

As officers prepared to attack the house Abballa filmed himself saying: “I just killed a police officer and his wife. The police are currently surrounding me.”

He also sent a personal ­message to France’s President Hollande, saying: “You are ruthless but we are also heartless. I was ruthless just now towards this policeman and his wife.”

Jean-Baptiste is said to have spotted Allabba stalking him and begged neighbours to raise the alarm as he tried to flee.

17 Cops stormed the house in Magnanville, near Paris, and saved the couple's three-year-old son Credit: Reuters

17 A neighbour said: 'It was like something out of a war zone' Credit: Getty Images

17 Unfortunately it was too late for police to save their colleagues' lives Credit: Getty Images

Neighbour Monique Fohrer said: “It was like something out of a war zone. All we can think of is the horror for that poor boy.”

Magnanville mayor Michel Lebouc said: “Why did this nightmare come to our little town?

“I saw the little boy when a fireman brought him out of the house and he was traumatised.

“Words cannot express my feelings about what has happened.”

17 Abballa had been jailed over links to a jihadi group in Pakistan in 2013

17 A French police officer lays flowers in tribute to Mr Salvaing, who was second in command at a nearby police station, and Jessica Schneider, a police admin worker Credit: AP:Associated Press

17 French police block the road leading to the crime scene Credit: AP:Associated Press

Abballa put a 13-minute video of the murders and 15 photos online.

Using his Facebook profile, under the name Mohamed Ali, he sent the video to 100 contacts.

In it he predicted: “The Euros will be a graveyard.” He also said he was acting on the orders of ISIS commanders to kill people during the Holy Islamic month of Ramadan, which began on June 6.

17 A source said: 'This was not just an attack on a policeman — it was an attack on the French state' Credit: Reuters

17 Police in Paris yesterday said three associates of Abballa were being questioned Credit: News Group Newspapers Ltd

French-born Abballa was a known Islamic radical jailed for three years in 2013 for “assisting criminals connected with a terrorist act”.

He served only a fraction of the sentence thanks to remission. On release Abballa was put on France’s “S-list” of individuals seen as a danger to state security — and was reportedly linked to a Syrian jihadi group.

17 Abballa frequently used social media to call for the murders of police, prison officers and journalists Credit: Reuters

But he somehow slipped off the radar despite the state of emergency since November’s Paris attacks and the fears of an outrage during Euro 2016.

Sources say French intelligence did not see him as an “imminent threat” and stopped tapping his phone.

Abballa grew up in the Paris commuter town of Mantes-la-Jolie, which is just four miles from Magnanville. He ran a fast food delivery service in a slum area known as The Ghetto.

#ISIS 'Amaq posted report in Arabic & English, saying that perpetrator was an "Islamic State fighter " #LesMureaux pic.twitter.com/D6j6Y6hfcI — SITE Intel Group (@siteintelgroup) June 13, 2016

17 A witness said she saw a fireman bring the couple's 'traumatised' three-year-old out of the house Credit: Getty Images

It is home to 21,000 impoverished immigrants and is a breeding ground for Islamic fanatics.

It is unclear whether Jean-Baptiste knew Abballa.

The policeman had worked in Mantes-la-Jolie as an investigator and Abballa was frequently in trouble from his teenage years onwards.

A source said: “It is probable the killer knew Salvaing and had deliberately targeted him.

“It would appear the policeman was followed home. The attack on his family was an extra act of revenge. This was not just an attack on a policeman — it was an attack on the French state.”

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17 Police outside the property where the family were taken hostage Credit: Twitter

Abballa frequently used social media to call for the murders of police, prison officers and journalists. Officers who searched his home said they found a hit list of six public figures, including French rappers.

The policeman’s son was yesterday said to be “extremely shocked but otherwise unharmed”.

ISIS yesterday issued a statement saying the killings were carried out by an “Islamic State fighter.”

Police in Paris yesterday said three associates of Abballa, aged 27, 29 and 44, were being questioned.

17 A Securite Civile first aid helicopter circles the area Credit: Getty Images

17 A cop car blocks the road during the raid Credit: Getty Images

17 Vehicles near the scene of the brutal killing Credit: Reuters

'Odious act' FRANCE’S President Francois Hollande held a crisis meeting yesterday and declared the murders were “unquestionably” an act of terrorism.

He condemned the “odious act” and said “all light will be shed” on the case.

Interior minister Bernard Cazeneuve called it “an abject terrorist attack” and expressed his “infinite sadness”.

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