Once again, a Mac's store in Thunder Bay has been hit by a robber.

Sunday, just after 10 p.m., a man went into the store on South Syndicate Avenue with a knife.

He made off with an undisclosed amount of money.

No one was injured.

Police do have a description of the suspect.  

Mac's Convenience Stores is working with Thunder Bay and District Crimestoppers in the wake of a rash of robberies in the city over the past year.

A spokesperson for Thunder Bay Police says the company is contributing money for rewards for anonymous tipsters whose information helps police track down robbers.