DETECTIVES hunting the hit-and-run driver who left a seven-year-old girl dead today revealed they had seized four black Range Rovers since the incident.

But none of the vehicles were found to be the one which struck Olivia Whiteside, of Goldhey Street, Daisyfield, Blackburn, on July 27.

Police revealed the action after extending the bail of five men arrested on suspicion of causing death by dangerous driving for another month.

This is to allow officers to analyse several items seized before deciding if any further action needs to be taken.

The details of more than 30 black Range Rovers were reported to police in the weeks after Olivia's death.

Officers initially focussed their investigations on the Billinge Street and Dalton Close area in Audley where the crash happened.

But as the inquiry progresses, officers have begun working through other leads.

Police also revealed that a potentially-vital witness had come forward following an appeal in the Lancashire Telegraph last week.

The woman, driving a Toyota Corolla, stopped at the scene moments after the crash and quickly drove off, apparently distressed by what she saw. At that time other members of the public were tending to Olivia.

To encourage other witnesses to come forward, police have produced leaflets in English and Urdu, and have also done presentations in mosques.

But Detective Chief Inspector Neil Hunter, leading the hunt, said he still believed there could be people in the Billinge Street and Dalton Close community who had vital information.

The hit-and-run driver is believed to have been a regular visitor to someone in the streets and police have previously said that they feared someone was shielding him.

Mr Hunter said: "I think the answer still lies in the Billinge Street and Dalton Close community. We would appeal for anyone with information and who has not come forward to contact the police immediately."

Call Blackburn police on 01254 51212 or Crimestoppers on 0800 555 111.