Investigators are more closely scrutinizing the story that an armored truck driver gave police in Thursday's $500,000 daylight robbery in Brooklyn.
The driver told police he was making a delivery at a check cashing store at Rockaway Parkway and Seaview Avenue in Canarsie when a masked man got into the car and pointed something at the driver's head.
The driver said the robber forced him to drive a few blocks before he fled with a duffel bag filled with $500,000.
Law enforcement officials say the driver's behavior is suspicious, saying investigators don't necessarily believe the driver would have allowed the robber into the truck without checking after just hearing a knock on the door.
His account of there being one suspect is also questionable, because such daring robberies are usually done by a team.
The drver was administered a polygraph test but the FBI, which is heading up the investigation, is not commenting on specifics of the case.
Law enforcement officials are probing whether the heist is connected to an armored car robbery in the Bronx in 2011. In that case, the driver entered a check cashing business with a bag of money, and was followed by two men, one of whom had a handgun.
The suspects demanded money, and maced the driver during a struggle. The driver fired several shots at the suspects as they fled with cash.
The same armored car company was involved in both robberies.