CEDAR FALLS -- Cedar Falls police are investigating an armed robbery at a Cedar Falls convenience store early Friday.

Police said the alarm came in at 12:01 a.m. at the Casey’s General Store at 5226 University Ave. of a robbery that had just occurred. When officers arrived they were told that a darker skinned male, wearing all black and a face mask, demanded money from employees.

The suspect had a small black handgun while making his demands. Before leaving the store, the suspect ordered employees into the store restroom. The suspect fled the scene with an undetermined amount of money.

The suspect is described as a darker skinned male, around 6 feet, 2 inches and a bigger build. The investigation into the incident is on-going, police said.

It is one in a string of robberies in the area lately.