The jury was sent out for a second day in the case of a robber charged with the murder of Pc Sharon Beshenivsky.
Mustaf Jama, 28, is accused of killing the popular policewoman during a botched robbery at a travel agent more than three years ago.
He has already admitted robbing the Universal Travel Agents in Bradford in November 2005, but denies murder and firearms offences at Newcastle Crown Court.
The 38-year-old mother of three and two stepchildren was shot and killed on her youngest daughter's fourth birthday as she responded to an alarm call from the premises.
Her colleague Pc Teresa Milburn was also gunned down in the street as the robbers escaped with little more than £5,000.
The jury was told that even if Jama did not fire the fatal shot, he was as much guilty of murder as the gunman.
In his defence, he claimed he did not know the other two robbers, already convicted of murder in a trial two years ago, were armed with a machine gun and pistol.Reuse content