Thunder Bay police are using security camera video to try to identify the man who robbed a convenience store this morning.

It happened just after 6:30 a.m. Wednesday at the Mac's store and gas bar at Waterloo and Walsh Streets.

Mac's convenience store and gas bar

The Mac's convenience store and gas bar at Waterloo and Walsh was held up Wednesday by a man armed with a hatchet. (Josh Lynn/CBC)

The robber carried a hatchet and demanded money from the clerk. Police say the employee handed over what they describe as  "a very little bit" of cash.

Surveillance video shows the man wore a ski mask. 

Police describe the robber as 18 to 25 years old, and about five feet nine inches tall with a slender build and long black hair.