JOHNSON CITY, Tenn. -

Johnson City Police are investigating an armed robbery they say happened Tuesday morning.

Dispatchers tell us it happened at the Roadrunner Convenience Store on Princeton Road just before 1:30 a.m. 

Police say a man entered the store with a knife and demanded money and cigarettes. We're told he left with an undetermined amount of cash and a pack of cigarettes.

If you have any information, call Johnson City Police at (423) 434-6166.