Waupaca police responded to an armed robbery at 4:37 a.m. Friday at the Waupaca Mobil Travel Center, 1222 W. Fulton St.
The suspect is described as being a white male, approximately 5 foot seven inches tall and weighing 160 pounds.
He was wearing dark clothing and a dark ski mask.
Witnesses say the man entered the truck stop and brandinshed a handgun, demanding money. He fled north on foot with an undisclosed amount of cash.
Anyone with information is asked to contact Waupaca County Communications Center at 715-258-4466.