A father of two was murdered outside an ice cream parlour after a masked killer clutching a 12-inch kitchen knife stabbed him to death in broad daylight.

Marcel Campbell, 20, from Tottenham, was ambushed in Upper Street, Islington, yesterday evening at 6.30pm.

CCTV captured the moment panicked onlookers fled as he was knifed, before his suspected killer is seen sprinting off up the street.

The footage has been blurred amid police concerns it could hamper the investigation.

CCTV captured a man, who was dressed in a black sweatshirt and light trousers, appearing to race from the scene moments after the fatal stabbing. The footage was muzzed amid police concerns it could hamper the investigation

The murder - the 66th in London this year already and the fourth in four days - was outside the Udderlicious ice cream parlour packed with families on the warm spring evening in the wealthy north London community.

Mr Campbell, who is known to friends as 'Cel', was pronounced dead at the scene and police are yet to find the masked killer seen sprinting away. They believe another suspect may have been involved.

His aunt Lynette told the Evening Standard: 'He was a wonderful father, he lived for his kids. He was a good boy, we are losing too many of our young people. His mother is devastated.'

A friend added: 'I have known him all his life. His kids were his interest, his everything. He wasn't in a gang. All we know is that he was in Islington and was jumped by a guy who jumped out of a van we are grieving, we are hurting.'

CCTV captured shoppers running along the road and moments later a man wearing a black hooded sweatshirt appears to flee the scene.

Islington, known for its juxtaposition of social deprivation and super-gentrification, has long been a favourite area among celebrities and politicians including Labour leader Jeremy Corbyn.

Marcel Campbell, 20, (pictured) from Tottenham, was ambushed in Upper Street, Islington, yesterday evening at 6.30pm

A police cordon and forensic tent remains at the scene in Islington this morning

Despite homes in the area costing upwards of £2million, Islington has a high crime rate. Pictured, police at the scene today

A flat in the affluent borough typically costs more than £610,000 while a terraced house costs £1.3million and the typical semi nearly £2.2million.

However the crime rate in the London borough remains high.

Police officers and paramedics from the London Ambulance Service were seen performing CPR on the victim near Highbury and Islington underground station in the wealthy area, but he was pronounced dead at the scene.

A witness, a man in his 30s who works yards from where the attack happened, said: 'I saw paramedics and a police officer giving him CPR. The police officer was going to town, he was giving it all for five, ten minutes.

'All credit to him. Then the paramedic trauma team came and took over.'

Officers are now working to trace at least two male suspects believed to have been involved in the incident.

A police forensic tent remains in place as investigators probe the capital's 66th murder

Forensic officers have set up a tent at the scene on Upper Street in Islington, north London

Paramedics, police and the London Ambulance service attended the scene

Forensics officers work inside the tent as night falls. Residents of Upper Street have been unable to reach their homes this evening

One eyewitness told the Evening Standard: 'The chap stabbed this man in the chest with a big kitchen knife. It must have been 12 inches long. The wounds were in his chest. They were obviously really bad.

'This all happened outside Udderlicious where there were kids hanging out after school. It's just horrific.'

Forensic officers are today probing the murder while a forensic tent remains in place.

A Met Police spokesman said: 'Police were called at approximately 6.30pm on Monday, 21 May to reports of a man suffering stab injuries after being attacked in Upper Street, near the junction with Tyndale Lane.

'Officers and London Ambulance Service attended. The man, thought to be aged in his 20s, was pronounced dead at the scene.

'Next of kin have been informed. We await formal identification. There have been no arrests.

'Officers from the Homicide and Major Crime Command are leading the investigation.

'This investigation is in its very early stages; at this time officers are actively working to trace at least two male suspects believed to have been involved in the incident.'

The cordon extends from Barnsbury Street to Islington Park Road for about 100 metres

A man has been stabbed to death on a bustling north London high street in broad daylight

The victim becomes the 66th person to die in London this year in an unprecedented wave of violence

William Potter, whose home looks down onto the scene of the stabbing, wrote on Twitter: 'Young guy stabbed and killed right outside my flat on Upper Street. Horrible thing to witness. Poor guy.'

One woman, who did not want to be named was pleading with officers to let her see her dog, which had been locked in all day.

Another resident said he was trying to get food to his elderly grandmother, but could not reach her house as a cordon remained in place last night .

At 9.30pm a police helicopter was circling over Islington.

Islington resident Paul Aaron was walking home to his flat at the time of the attack.

'The stabbing on Upper Street is literally outside of the flat me and my friend live in,' he said.

'To think I was walking home at the same time that it happened, if I was five minutes earlier, God knows it could have been me.'

Police at the scene said that the nearby St Mary's church would be open for food and shelter overnight.

Detective Chief Inspector Dave Whellams, said: 'This was a brutal attack that was carried out on a busy street in broad daylight.

'I am asking anyone who saw the assault or has any information to contact detectives.

'In particular we would like to hear from anyone who was driving in the area around this time and has dash-cam footage.

'Your information could be vital in helping us find out why a young man lost his life.'

The area remains cordoned off as police investigate the incident which left one dead

Sixty-six people have died in London this year, as a wave of violence sweeps the city

Arunesh Thangarajah (pictured) has been named as the young man who was stabbed to death in Mitcham on Sunday

Police were at the scene throughout Sunday as they investigate the death of the latest victim

This unnamed individual becomes London's 66th murder victims of 2018 and the fourth in four days.

In the early hours of Sunday in Mitcham, south-west London, 28-year-old Arunesh Thangarajah was stabbed to death in a senseless and frenzied attack.

Police arrested a 44-year-old man on suspicion of murder at the scene and he remains in custody.

Concerned local resident Shelly, 48, from neighbouring Montrose Gardens, said: 'It's another death, another young boy - we've had enough of it quite frankly.

'He was attacked over at the Co-op and he stumbled over here and across the road, looking for help.'

And on Friday Osman Shidane, 20, died after being attacked in Victoria road in South Ruislip on Tuesday.

Shidane, from West Drayton, Hillingdon, was rushed to hospital and remained in a critical condition for several days.

The 16-year-old boy charged with Shidane's murder is from Hillingdon but cannot be named for legal reasons.

Osman Shidane, 20 (pictured), died on Friday after being repeatedly stabbed on Tuesday night

A boy, just 16, who cannot be named for legal reasons, was charged with Shidane's murder yesterday and is being held in custody

He was arrested on Wednesday at about 12.30pm in The Fairway, a residential street in Ruislip, on suspicion of attempted murder.

This most recent spike in deadly stabbings began with the death of a trainee bricklayer who died outside his home after he was chased down by a rival gang.

The youngster, named locally as Abrahaman Juma, was in his slippers as he ran from his killers at around 11.30pm on Thursday.

Just hours after his murder family and friends were stood grieving outside the family home in Barking, east London.

Knife and gun crimes tend to be disproportionately concentrated in London and other metropolitan areas, the Office for National Statistics said, but it added that the majority of police force areas saw rises in these types of violent crime.

Abrahaman Juma (pictured) was brutally knifed to death on Thursday in Barking

Police were first on the scene when they were called to Crows Road, Barking, in east London to find the man suffering with stab injuries

Friends and family of the victim where spotted congregating near to the spot where the 24-year-old was killed

In the first three months of this year 45 murders were recorded, compared to the first quarter of 2017 when there were 23.

There were two stabbings in just half an hour last month, when on April 15 young father Raul Nicolaie was knifed to death aged 26 in north London. In Brixton in the south of the capital, a woman lost her life to knife crime.

An urgent investigation into the violent crime wave in the capital was launched by the Police and Crime Committee of the London Assembly - and Mayor Sadiq Khan has been urged to 'take hold of the situation'.