BANGOR — A third state appears to be pursuing charges against a Greyhound bus driver charged in one of the bank robberies believed to have been committed by a man dubbed the burly bandit by the FBI.

Robert Ferguson, 47, of Lowell, Mass., is being held in Maine, where he was arrested Wednesday in the robbery of a Bangor Savings Bank in Orono. He was later charged in Warwick, R.I., for a May 27 robbery in that city.

The Rhode Island robbery was one of at least 10 bank holdups committed by the burly bandit in New England, FBI spokeswoman Gail Marcinkiewicz said today. The investigation is ongoing.

Defense lawyer Jon Haddow said today he has heard from authorities in Connecticut and anticipates charges could be forthcoming from that state as well. Ferguson maintains his innocence, Haddow said.

Ferguson made a brief appearance today in U.S. District Court in which he waived a detention hearing, meaning he’ll continue to be held in Maine for the time being.

Police zeroed in on Ferguson after a motel employee recognized him from surveillance video from the bank robbery in Orono. Police questioned Ferguson at a Days Inn, where his Greyhound bus was parked outside.

Investigators found a blue bag containing currency stashed in an electrical panel inside the bottom storage area of Ferguson’s bus, according to an FBI affidavit.