A man entered a bar with a handgun and forced the bartender to open the cash register, police said.
Police say it happened around 7:40 p.m Monday at the Madison Inn at 1325 Turner St. in Allentown.
According to police, the armed man got away with an unknown amount of money.
There were no injuries during the robbery police say.
The robber reportedly fled on foot and police attempted a canine search but were unsuccessful.
They do not have a definite description of the suspect at this time.