A New Jersey police officer is dead after authorities say he was ambushed.
Police in Jersey city say the officer was responding to a possible robbery Sunday morning.
They say a man shot the 23 year-old officer while he was still in his squad car.
Before the ambush, police say that same man had assaulted a security guard at the store and stole his gun.
They say he didn't make any attempt to rob the store ,instead he told a witness he would be famous.
That suspect was later shot and killed by police.