Yusuf Jamma told a policewoman he would do the same to her as he had to a woman the previous week, when he was arrested eight days after the robbery and shooting, the Sharon Beshenivsky murder trial heard.
PC Louise Davies told the court how she was sat a few inches from Jamma in a police van when he made the remark.
PC Davies said she was helping to transfer Jamma and other prisoners between police stations in Birmingham on Saturday, November 26, last year. She said Jamma was shouting in a cell in the van and she asked him if he would quieten down and sit down.
She was asked by Diana Ellis QC, representing Muzzaker Shah, if Jamma had said words to the effect of "What are you looking at? I'll do the same to you as I did to the woman last week". The officer replied: "Yes, that's right."
PC Davies said she immediately told her Sargeant about the remark and recorded it on a log as a significant comment. She confirmed Jamma had been arrested for an entirely unrelated allegation made by a woman, said to have occurred in the early hours of that morning.
Peter Griffiths QC, for Jamma, suggested PC Davies had mistaken the words spoken.
The court heard that three days later Jamma told a custody Sargeant at Wood Street Police Station in Wakefield he had been advised by a solicitor to give himself up if he was not responsible for the shooting, but people he associated with had told him not to, so he didn't.
He told the officer he would be able to show he was somewhere else at the time of the shooting and was innocent.
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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