METHUEN (CBS) – Thieves have been making their way through small businesses in Methuen, with four burglaries in a week.

A beauty shop, a pizza shop, an exterminator, and a local convenience store have all been robbed.

It’s unclear if the same crooks are responsible for all four burglaries.

Three of the four stores had surveillance cameras. During at least one of the burglaries, two thieves were caught by one of those cameras.

The owner of the convenience store that was robbed is putting up a $500 reward, hoping someone will turn on the crooks.