The FBI said a man suspected of robbing five banks in Massachusetts is now suspected of robbing a bank in Plaistow, N.H.

The FBI is offering a $20,000 reward to help catch the suspect.

In six robberies in the two states, the suspect has worn a black scarf over his face and carried a black handgun.

Gail Marcinkiewicz of the FBI’s Boston office said he’s made threats to shoot customers and bank employees.

The robberies began in January.

The Plaistow robbery happened about 2 p.m. Friday when a man walked into Ocean Bank, displayed a handgun and demanded money while ordering people in the bank to get on the floor. (AP)