Portland Police are working with departments in Westbrook and Falmouth to address a series of robberies in the area.
Six businesses have been targeted in less than a week, which police say is unusual.
“We frequently get robberies but we very seldom see a rash of them in such close proximity in this short amount of time,” says Portland Police Lieutenant Robert Martin.
The robber appears to be a man who wears a dark face mask. He uses a gun to demand cash.