The jury in the Sharon Beshenivsky murder trial today heard expert evidence about the movement of mobile phones belonging to some of the defendants on and around the day of the robbery and shooting.

Telecommunications engineer David Sanderson, who examined calls data records of phones involved in the case, charted the whereabouts of Raza Ul-Haq Aslam's mobile on November 18 last year.

He said Aslam's phone had moved to Harehills Lane, Leeds, during the morning and remained there until just before 1pm. There was a gap of two hours and then it was used again at 14.52 in the Bradford area.

The court heard that between 15.12 and 15.16 the phone was used in a cell site area in the centre of Bradford, but not covering the area of Haworth Street or the Universal Express Travel Agents.

A number of other calls were made from other Bradford cell sites between 15.19 and 15.47 before the phone moved back to Leeds.

Mr Sanderson told the court that Faisal Razzaq's phone had been used in Barnsley, Sheffield and the Midlands, as well as Leeds, during the days leading up to the 18th.

He confirmed there had been calls between Hassan Razzaq and Piran Ditta Khan in London on November 13. Both phones were then charted, moving to Bradford during the day. They were then used in Leeds and back in London.

On the 17th calls were made between the two phones in London but Razzaq's phone then moved north and had reached Harehills Lane by 23.52.

Questioned by Peter Wright QC, for Hassan Razzaq, Mr Sanderson said the calls records were "entirely consistent" with a vehicle coming north and arriving in Leeds just before midnight and not consistent with being in Leeds much earlier in the evening.

Yusuf Abdillh Jamma, 20, of Small Heath, Birmingham, Raza Ul-Haq Aslam, 25, of Kentish Town, London, and brothers Faisal Razzaq, 25, and Hassan Razzaq, 26, both of Forest Gate, London, plead not guilty to PC Sharon Beshenivsky's murder.

Muzzaker Imtiaz Shah, 25, of London, admits murder and robbery but denies the attempted murder of PC Teresa Milburn. He has also pleaded guilty to two charges of possessing a prohibited weapon and two charges of possession of a firearm with intent to endanger life.

Aslam and the Razzaq brothers deny robbery but Jamma has admitted that charge. Aslam, the Razzaq brothers and Jamma also plead not guilty to firearms offences.

The trial continues.

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