A mob of youths torched several cars and set off fireworks at a balloon release for one of the A66 crash gang last night.
Teens in tracksuits gathered to remember Michael Cahill, 23 - one of the five men who died in a wrong-way crash with a police car that also killed two officers.
At least five cars were set ablaze in a horse field near Haswell, County Durham, with the startled animals looking on from the far side.
The site was around 15 miles from Middlesbrough, where a wave of violence believed to be linked to the crash and local organised crime has forced police to draft in hundreds of reinforcements.
Footage posted to social media showed a gang of bikers in the middle of the field revving their engines while car horns blared continuously.
Cars were first driven erratically around the field, throwing up mud and crashing through hedges, before some were parked and set alight to whoops from the crowd.
Dozens of hooded youths set off blue smoke flares and fireworks, and released balloons spelling out 'Michael' into the sky.
Clips of the antics posted online were captioned 'Rest in peace Micky'.
Several cars were set ablaze by hooded youths in a field near Haswell, 15 miles from Middlesbrough
The cars were parked up in different spots around the field and torched
Clips of the cars skidding around the field were captioned 'Rest in peace Micky', apparently in reference to Michael Cahill, one of the A66 fatalities
The chaotic scenes broke out at a memorial organised for Michael Cahill, 23, who died in the A66 crash
A statement from Michael's mother called for different types of vehicles to gather
Many of the youngsters reached for their phones to film the cars burning
Scores of blue balloons spelling out 'Michael' were released into the sky
Burnt-out shells were all the remained of the vehicles, surrounded by scorched grass
After the mob cleared, footage showed smoldering, burnt-out car shells lying on scorched grass while locals used farm machinery to begin the clear up.
Michael's mother had earlier called for 'bikes, jeeps, cars and quad [bikes]' to gather for her son's send-off.
She wrote on social media on Thursday morning: 'Change of plans Michael's balloon release Thursday Peterlee White House opposite on field, come on lads bikes, jeeps, cars, quads give him send off her deserves'.
The Daily Mail understands that the County Durham and Darlington Fire Service responded to the incident.
Hundreds of extra police are drafted in to Middlesbrough as town teeters on the brink of gang war
Locals reported the horses were 'absolutely terrified' by the scenes unfolding in their field.
It comes as hundreds of extra police were drafted into nearby Middlesbrough on Thursday to restore order, amid fears the town was on the brink of descending into gang war.
Violence, believed to be a fallout from the crash that killed PC Matthew Blades, 37, and PC Tom Clough, 38, has spiralled across Teesside.
A suspicious house fire in Grangetown, just east of Middlesbrough, claimed the lives Valentina Foster, seven, and 34-year-old Natalie McDonald on Wednesday morning.
Cleveland Police said it was 'keeping an open mind' regarding the cause of the house fire but could not 'rule out any links to wider organised crime at this time'.
Two men, aged 31 and 23, have been arrested on suspicion of murder and remain in custody.
A house was rammed by a vehicle on Thursday morning in South Bank - near the site of the A66 crash.
Several other ram attacks have been carried out in Middlesbrough - including against the father of one of the A66 fatalities just hours before the crash.
Valentina Foster, seven, and her aunt Natalie McDonald, 34, died in a suspicious house fire on Wednesday
A house in the South Bank area of Middlesbrough was rammed by a car in the early hours of Thursday
A house in Acklam, Middlesbrough, linked to the father of Cole Worthy, one of the young men who died in the A66 crash, was rammed hours before Saturday's crash
Armed police on the scene of the suspected knife attack in Eston on Thursday
On Thursday afternoon, armed police swarmed a house on the Bankfield estate in Eston after a 39-year-old man was injured in a stabbing.
Former mayor Andy Preston said the town was 'on its knees' – as he warned the ongoing feuds between criminal gangs could escalate further.
Cleveland Police, which is one of the smallest in the country, has seen its resources stretched to breaking point this week.
The Government has now responded with 200 reinforcements after MPs in the area appealed for help.
The decision was announced by Councillor Alec Brown of Redcar and Cleveland Council in a social media post.
'Over 200 extra police officers from forces around the country are here and are en route, from detectives to armed response,' he wrote.
'I will be sending a letter today to our Prime Minister asking for even more resources.'
'People need to feel safe in their homes,' Mr Brown added.
Middlesbrough has the highest crime rate in England excluding central London, and rival criminal groups have been spreading fear among residents.
Cleveland Police has so far made 17 arrests in the wake of the crash.
The offences range from suspicion of participating in an organised crime group to possession of firearms or drugs.
Gatherings had been held earlier in the week to remember the other four men who died in the VW Passat.
Friends and relatives of Jacob Matusiak, 23, and 17-year-olds Cole Worthy and Theo Rae, congregated on a grassy area in Middlesbrough on Wednesday.
A group gathered in Middlesbrough on Wednesday in memory of three of the five young men who died
Blue smoke from flares filled the air outside the East Middlesbrough Events Centre
Messages remembering the young men spray-painted on East Middlesbrough Events Centre
Messages have been spray-painted on the building reading: 'RIP The Boys', 'Never Be Forgotten RIP The Lads' and the initials of those in the car with 'Rest easy boys'.
Community group Active Tees Valley, which operates the venue, has criticised the vandalism, saying that 'damaging buildings that are being used to support local residents ultimately impacts the same community we are all trying to look after'.
Meanwhile, an inquest into the deaths of the two officers was told on Thursday that they died from head and neck injuries.
In short, consecutive hearings, coroner Paul Appleton said PC Blades was identified by his wife, and PC Clough by his partner.
Mr Appleton told the hearing that 'all occupants of both vehicles were sadly pronounced dead at the scene'.