Sheriff’s deputies are searching for a man who held up a Summerville gas station early Thursday morning.

The armed robbery happened about 2:30 a.m. at AM Flag gas station, 10020 Dorchester Road, an incident report states.

The store’s clerk told deputies he was stocking beer when a white man wearing a dark jacket, jeans and a black ski mask entered the station.

The man, who was armed with a large knife, threatened to kill the clerk if he didn’t open the cash register, the report states.

The masked man stole an estimated $350 and a cell phone, according to the report. He then fled on foot.

Anyone with information can call Crime Stoppers at 554-1111.