(GERMANY OUT) Symbol Kriminalitaet, Verbrechen, Mord, Einbruch, Einbrecher mit gezogenem Messer hinter einem Vorhang, burglar (Photo by Wodicka/ullstein bild via Getty Images)

Bethlehem police are investigating a robbery at knife point.

Police say at about 4:30 Sunday morning, a man walked into the Selkirk Stewarts wearing a black mask, black jacket and black pants and displayed a knife to the clerk.

The suspect fled on foot with an undisclosed amount of money.

He was last seen headed south on Route 9W.

He is described as white and approximately 5'8" to 6 feet tall.

Photo: Getty Images