A judge has declared a mistrial in the case of a man accused of killing an off-duty Miami Police officer back in 2008.
Andrew Rolle, 26, was accused of first-degree murder in the shooting death of Det. James Walker in January 2008.
Police say Walker was off-duty when he was shot to death inside his unmarked police car in North Miami Beach.
Rolle, who was arrested after a massive search, has claimed the shooting was in self defense.
