City police are investigating after a store employee sustained serious injuries during an armed robbery Tuesday morning.

Police were called to a store in the 200 block of Pendygrasse Road at roughly 2:30 a.m. CST. When they arrived, they found a store employee had suffered "serious injuries," according to a police news release.

Officers were told that at roughly 2:16 a.m. CST, a person entered the store, located in Saskatoon's Fairhaven neighbourhood, to make a purchase and then left.

The person then reportedly returned to the store with his face covered, carrying what police said was a "pipe with a blade taped on the end of it."

The suspect allegedly assaulted the employee behind the till before fleeing on foot. The 20-year-old victim was taken to hospital.

The suspect is described by police as being in his late teens or early 20s and was roughly five-foot-seven.

Police say he was wearing a black bunnyhug with red lettering on the back and left sleeve.

He was also wearing a Chicago Bulls hat and had a black balaclava over his face.

Anyone with information is asked to contact police or Crime Stoppers.