Two people have been arrested after a hit-and-run incident which killed a twelve-year-old boy in Bradford, West Yorkshire.
A force spokesman said a police car stopped a Seat Ibiza in a lay-by on Rooley Lane for a check.
As officers got out of their car to approach the vehicle it sped off along the road before colliding with the boy on a crossing.
The spokesman said: "He tragically died of his injuries."
The car did not stop but continued to the Chain Bar roundabout on the M606, where it collided with two other vehicles.
It was later found on Westfield Lane, in the Wyke area of Bradford.
Detective Superintendent Mark Ridley, who is leading the investigation for West Yorkshire Police, said: "This is a tragedy for the family and they are absolutely devastated. Specially trained officers are currently working with them."