A teenager has been arrested on suspicion of murder after a cyclist was deliberately dragged under a car.
The victim, 17, has life-threatening injuries after being hit by a Ford Focus on Monday night then pulled underneath the car and along a road in east London.
Police believe the cyclist was deliberately hit.
The Metropolitan Police are investigating and said a boy, 16, has been arrested on suspicion of murder.
Scotland Yard confirmed the suspect remains in police custody after being arrested on Tuesday.
Emergency services were called to the scene in Bazely Street, Poplar, shortly before 7pm on Monday but the driver had fled the scene, police said.
Yesterday a video emerged of the moment the teenage victim was pulled from under the car by a group of witnesses who ran to help.
Together, the hero bystanders lifted the red Focus from the ground while others dragged the cyclist out from underneath.
The teenager was fighting for his life when paramedics arrived at the scene and said his injuries will be life-changing.
Officers are now appealing for anyone with dashcam footage of the crash, or witnessed the incident themselves, to come forward.
Detective Sergeant Lauren Brady said: ‘We believe the victim was deliberately targeted and was dragged a significant distance underneath the vehicle.
‘I know there were a number of witnesses and anyone who hasn’t contacted police, or people with any dashcam footage, are asked to call police via 101 quoting reference Cad 6546/09Sep.’