Wellington OPP are investigating an armed robbery at the Mac's Convenience Store in Harriston.

A lone male entered the store just before 5 a.m. Saturday morning and pulled out a weapon.

He threatened the clerk and made off with cash and cigarettes.

He is described as a younger male in his mid 20s, 5'7, wearing camouflage clothing and a black balaclava.

The suspect left the scene on foot in an unknown direction.

Contact police if you have any information.