Officers hunting the killers of PC Sharon Beshenivsky today named three men they want to trace.
They are Muzzaker Imtiaz Shah, 24, originally from Burnley, Mustaf Jama, 25, from the north Kensington area of London, and his brother Yusuf, 19, from the same area.
PC Beshenivsky was gunned down in Bradford a week ago today as she went to investigate a robbery at a travel agents in the city centre.
Detective Superintendent Andy Brennan, who is leading the hunt for the killers, appealed for information about the suspects.
Mr Brennan told reporters at a briefing in Bradford: "There is no indication at this stage that any of the men have left the country.
"It is possible they may be in the London area. I am appealing for any information which can help us to trace these men as a matter of urgency.
"Anyone with information is asked to contact the Incident Room on 01274 373700."
Mr Brennan also gave more information about the movements of the getaway car used by the killers.
He said: "Immediately after the events at the travel agents three men were seen running to a silver vehicle which was parked in Howard Street.
"We believe this vehicle is the silver Toyota Rav 4 registered number WP05 YTT, details of which were provided to the media previously.
"We have trawled through many hours of CCTV and have a number of sightings of the vehicle on November 18th (the day of the shooting).
"This includes a sighting of the vehicle travelling along Morley Street just after 3pm, only minutes before the events at the travel agents.
"The vehicle was later seen travelling along Manchester Road, out of Bradford city centre, in the general direction of the motorway network at 3.41pm.
"We are appealing for any information in relation to the vehicle on November 18th and its occupants."
Describing the suspects, he said Shah is believed to have lived in the London area for the last four years.
Yusuf Jama is last known to have been living in the north Kensington area, as was his brother.Reuse content