A 15-year-old boy was killed in front of his father and brother when a speeding stolen car ploughed into him on a pedestrian crossing.

They were walking across White Abbey Road, Bradford, when the boy was struck by a red Toyota Corolla which failed to stop.

The boy has not yet been named by police, although messages on flowers at the scene of the accident pay tribute to "Amir Ali".

Police said the car was being driven at high speed and had overtaken three vehicles waiting at the pelican crossing before it hit the boy outside the Airtel mobile phone shop at 5.45pm on Saturday.

The Toyota, which was travelling away from the city centre, was later found abandoned a short distance away in Lincoln Road.

Police said it had been stolen earlier on Saturday.

Today, Detective Inspector Noel Devine, of Bradford North police, said the boy's family had been left traumatised by his death and he appealed for help in tracing who was in the stolen car.

"We're now trying to identify the occupants of the car. There could have been up to three people in the vehicle," he said.

"The family are finding it very hard to come to terms with this. They're finding it hard to even speak to our family liaison officer."

The stolen Toyota has been taken away for detailed forensic examination.

Ward Councillor Sajawal Hussain said the boy's family were deeply shocked by his death, which had also sent shock waves through the entire community.

He said it was the latest in a series of fatal accidents caused by speeding cars.

"To my knowledge there have been three or four deaths in the last two or three years," said Coun Hussain (Lab, City).

"People are very concerned and they've come to the point where they want speed cameras."

Coun Hussain said he had spoken to members of the boy's family who had told him how the boy had just visited the mobile phone shop with his father and brother.

They had been crossing the road to return to their car to go home to break the fast for Ramadan.

Coun Hussain urged people in the community to do everything possible to assist the hunt for the driver and occupants of the stolen car.

"I want to appeal to every single person in the area to help," he said.

"This is not just one family's matter but the whole community's because these people in the car might do it to someone else.

"The sooner they're caught the better. Please speak to the police in confidence and try to identify these people."

Det Insp Devine urged anyone who can help to contact police on (01274) 376259.