A 43-year-old man and woman aged 41 have been arrested in connection with the attempted murder of police officers during a gun attack.
They were held in north Belfast on Tuesday morning in relation to a shooting in December.
Three PSNI Land Rovers came under automatic fire on Crumlin Road in north Belfast on December 5 last year.
It is believed at least 10 rounds were fired at the vehicles from over a wall by someone standing on a makeshift platform.
The attack took place close to the loyalist camp at Twaddell Avenue.