Two suspects have been arrested in connection with the May 11 daytime robbery at knifepoint of a driver who was trying to make a bank deposit at a deposit box in Waterville, according to Waterville police.

David Dulac, 27, of Fairfield, was charged Saturday with robbery, a class A felony, and criminal conspiracy, a class B felony, in connection with the May 11 incident, based on an admission he made in an interview with Detective Duane Cloutier, according to a Waterville police news release.

Dulac had been arrested about 8 a.m. Saturday at his residence at 273 Ridge Road in Fairfield on outstanding warrants for motor vehicle violations and theft, police said. He was taken to the Kennebec County jail and held in lieu of $10,000 bail.

Based on Dulac’s account of the robbery, police also filed charges of robbery and criminal conspiracy against Shane Sturgeon, 27, of Oakland. Sturgeon had been arrested Wednesday on Church Street in Oakland on warrants from Androscoggin and Franklin counties charging him with theft and unpaid fines. Police had identified Sturgeon as a suspect in the Waterville robbery as a result of their investigation and processing of evidence, and Sturgeon admitted after his arrest that he had been in the area of the robbery but he denied involvement in it, police said.

In his interview Saturday, Dulac implicated Sturgeon in the planning and execution of the robbery, according to the release.

Sturgeon also is being held at the jail in lieu of $10,000 bail.

The release said investigators had learned Dulac was driving a red Jeep Cherokee owned by someone else. When Waterville police notified other agencies about that, a Fairfield police officer noticed the vehicle at Dulac’s address in Fairfield and told Waterville police about it.

The robbery occurred at 2:44 p.m. May 11 as the victim was trying to make a deposit at a Bangor Savings Bank deposit box on Main Street. The victim reported that a man ran up to the driver’s side window of the victim’s vehicle, brandished a knife and demanded the money bag, with which he fled on foot after the victim gave it to him, police said.

Dulac and Sturgeon are scheduled to appear July 15 in Kennebec Superior Court.

The news release did not say whether any of the stolen money has been recovered. Police said no further information about the case would be available until Monday.

Oakland police and Maine State Police, including a state police tracking dog, also took part in the investigation.