Southampton Town police are looking for three masked men who held up the Valero gas station on Flanders Road and Ludlam Avenue at gunpoint on Halloween night and fled with about $270 cash.
The robbery took place about 9:30 p.m. last Wednesday, police said.
That night was Halloween night, as well as two days after Hurricane Sandy hit the area.
At least two of the three men were carrying guns and all three were wearing Halloween costumes, said Detective Sergeant Lisa Costa.
The men struck the attendant of the Riverside station, took about $270 from a drawer, and then attempted to rob the money the attendant had on him, but took off because they felt police would be coming soon, Sgt. Costa said.
This gas station has been the scene of several robberies over the years.
It was not open the following day and remained closed Monday, as gas stations throughout Long Island have had difficulty getting gas or pumping gas because of the storm and subsequent power outages.
Many have been closed since the storm.
Sgt. Costa said police would be releasing additional information on the robbery, including possible video from surveillance cameras.