Police in Lancashire have arrested four men after a seven-year-old girl was hit by a car and died.
Olivia was playing in the street when she was knocked over
Olivia Whiteside, from Goldhey Street in the Copy Nook area of Blackburn, was playing out in the street on Thursday when she was knocked over.
The incident happened at the junction of Dalton Close and Billinge Street.
Police said on Friday they were trying to trace the driver of a 4x4 car, thought to be an Asian man in his late 20s or early 30s, and his passenger.
The four men who have been arrested are due to be questioned by officers later.
Witnesses tried to resuscitate the youngster before paramedics arrived.
She was taken to hospital but pronounced dead on arrival.
Insp Simon Hayes, from Lancashire Police, said: "The driver of the 4x4 failed to stop at the scene and police are investigating the circumstances of the incident."