The first robbery happened around 10:00 p.m. on Route 130 in Brooklawn, New Jersey.
During the first robbery, police say an armed man got away with a few hundred dollars.
Three hours later, around 1:00 a.m., police say a suspect entered the same gas station, flashed a weapon at the clerk and took off with an unknown amount of cash.
There were no reports of injuries and police are trying to determine if both robberies are connected.
