Police have released this image of a suspect in a Mega Family Mart Store robbery on John Street North. (Hamilton Police Service)

Police are looking for a suspect after someone robbed a Mega Family Mart Store last month.

A lone man walked into the store on John Street North around 11 p.m. on May 7. Police say he demanded money from the cash register, and two clerks gave it to him. Then he ran out of the store.

There were no customers in the store and the victims weren't injured.

The suspect was wearing a black hooded sweater, black pants, black and white shoes and a baseball cap.

Police have also released surveillance footage of the man.