Footage shows how one of the men who died in a crash that also killed two police officers filmed himself driving recklessly just months ago.A clip shared on TikTok this May appears to show 23-year-old Jacob Matusiak behind the wheel – with the caption: 'Unfortunately I'm not a nonchalant boyfriend'.Filmed by the driver, it shows a car barreling through a neighourhood before swerving onto a green in the middle of an estate.In broad daylight, the vehicle appears to career down a footpath as the driver casually spins the wheel with one hand.Mr Matusiak was among seven people who died in the early hours of Saturday when a car travelling the wrong way down the A66 near Middlesbrough crashed head-on into a vehicle carrying two police officers.Photographs of the two officers killed by the five 'TikTok joyriders' were released on Sunday, alongside a tribute from one of their families.PC Matthew Blades, 37, and his colleague Tom Clough, 38, have been hailed for their bravery after being killed in the line of duty.The young men in the other car were today named as Michael Robert Cahill, 23, Theo Rae, 17, Cole Robert Worthy, 17, Jacob Matusiak, 23, and Makai Saddington, 18. Jacob Matusiak, 23, was confirmed by police as one of the seven people killed in the crash Footage shared online in May appears to show him driving recklessly along various roadsBoth police officers and the five men in the VW Passat – which Cleveland Police believes was using cloned plates – were declared dead at the scene. Officers in another police vehicle had earlier been pursuing the 'joyriders' for seven minutes before aborting the chase, the force said on Sunday.Just ten seconds later, the Passat crashed into PC Blades and PC Clough's police car, which had not been involved in the pursuit.They were in the area after the plates on the boys' car activated an Automatic Number Plate Recognition camera.PC Clough's family paid tribute to the 'proud' officer on Sunday.They said: 'He was our hero with a fantastic of humour. Jumped into action whenever needed, and willing to help anyone for any reason. Proudly fought for his country to make the world a better place. Always on public duty throughout his short life.'We as a family and Tom's partner would like to express our sincere gratitude for the overwhelming support and condolences from friends, colleagues and the wider community.'PC Blades, meanwhile, can be seen in social media posts smiling at the camera as he attends Manchester United football matches and completes a half marathon.The husband and father-of-two had recently become a coach for a local amateur football team and was preparing for his first turn teaching its under-sevens team – who his son plays for. PC Matthew Blades, one of the two officers who died in the crash, has been pictured PC Tom Clough has been remembered by his family as a 'hero with a fantastic sense of humour'Seaton Carew said on social media: 'He was looking forward to being part of the team and, most importantly, to coaching his own son, who is going to be playing for the Seahawks [under-sevens] this season.'Matty and his oldest son are much-loved members of our club and our U10 Lions football family.'Cleveland police and crime commissioner Matt Storey described the force as a 'really tight-knit family' and said the incident would 'have a big impact on them'.Last night it emerged Saddington had posted a string of TikTok videos appearing to show him taking part in high-speed police chases months before his death.It is understood he and his companions had close links to the traveller community.In the early hours of Saturday, the group of young men became involved in a pursuit with two police cars chasing the 'suspicious' vehicle.Ring doorbell footage at 3.36am shows the VW Passat being driven at speed through Middlesbrough's streets. Officers called off the pursuit when the vehicle drove on to the A66.Just three minutes after the pursuit was caught on camera, at 3.39am, the car ploughed into the path of a different marked armed-response vehicle, which was on the correct side of the A66.Cleveland Police lowered flags to half-mast at their Middlesbrough HQ in tribute to their colleagues, who are understood to have not been part of the pursuit. Seaton Carew FC also made the same gesture today. Makai Saddington, 18, one of the five youngsters killed in the VW Passat, had posted videos on TikTok of him being chased by police over the past few months Close friends Theo Rae (left) and Cole Robert Worthy both died in the crash on Saturday Michael Robert Cahill was praised by those who knew him as a 'lovely, down to earth lad'Chief Constable Victoria Fuller looked close to tears on Saturday as she told how she and her deputy David Felton had visited the families of PC Blades and PC Clough to offer condolences and support 'with this unimaginable loss'.Paying tribute to the men, she said: 'These were brave officers, protecting our communities and serving our residents, who didn't return home to their families at the end of their shift.'She added: 'This is an incredibly sad day for Cleveland. The loss has been felt across our communities, by our police family, and by our partner agencies.'My thoughts, and the thoughts of everybody here at Cleveland Police, are with their families, friends, colleagues, and loved ones at this incredibly difficult time.'Lauren Somerville, chairman of the Cleveland Police Federation, said: 'Words cannot describe the pain the Cleveland Police family is feeling today.'Our colleagues who should have been going home to their loved ones at the end of their shifts are not. That is just unfathomable.'Redcar MP Anna Turley, a government minister whose constituency covers the area, said of the officers: 'They went to work to keep people safe, and they should have come home to their families.'Their loss will be felt deeply by their loved ones, fellow officers and right across the communities they served.'The Independent Office for Police Conduct has opened an inquiry into the circumstances surrounding the fatal crash.Prime Minister Andy Burnham thanked the emergency services for their response in 'incredibly difficult circumstances'. Flowers have been placed in memory of the victims including PC Blades and PC Clough Cleveland Police Chief Constable Victoria Fuller named the two police officers killed as PC Matthew Blades and PC Tom Clough during a police press conference on Saturday