The police watchdog, the Independent Police Complaints Commission, is independently investigating the involvement police had with a car before and after a crash which killed a 12-year-old boy.
Bilal Khizar died after being struck by a car on Rooley Lane on Saturday 6 October.
He was pronounced dead at the scene. The car also collided with other vehicles.
The IPCC wants to speak to anyone who saw a Seat Ibiza that had been seen by police and pulled-over in a lay-by.
A maroon Seat, registration number EF59 ULN, was first seen by police at 6.45pm at the junction of Fenby Avenue and Sticker Lane in Bradford. Police followed it up Sticker Lane then into Rooley Lane. The car and police travelled along Rooley Lane and on to the M606 until the Chain Bar roundabout.
– IPCC Commissioner Naseem Malik
It is important that the events that led up to and followed this tragic incident are investigated fully and that we understand the exact nature of the contact between the police and this car. That is why the IPCC needs anyone who saw the Seat Ibiza to contact us.