FAIRFIELD - The FBI is offering a $50,000 reward to anyone who can lead them to a group of serial bank robbers who have targeted at least two banks in Southwestern Connecticut.

Investigators say the group of three to five men is responsible for the robbery at the Fairfield County Bank in Fairfield in September 2010.

They are also being blamed for four other robberies in the state, including one at the former New Alliance Bank in Orange in December 2010.

In each robbery, police say the men work dark clothes, showed guns and ransacked the teller drawers.