One of the two men charged with murdering a Hyde Park mechanic was so incensed by a faulty engine that he went to the man’s auto body shop and threatened to “come back to shoot up the place,” a Suffolk County prosecutor said during a homicide arraignment today.

MARIO BURNS (D.O.B. 10/5/72) and CORNELIUS EVANS (D.O.B. 6/19/75) were formally charged today with first-degree murder, unlawful possession of a firearm, and unlawful possession of ammunition, for the March 29 shooting death of 36-year-old Charles Cantave, a Hyde Park resident who worked in Brockton. The Suffolk County Grand Jury indicted the duo yesterday.

Assistant District Attorney Holly Broadbent, who led the grand jury investigation for Suffolk DA Daniel F. Conley’s office, told the court that, approximately three weeks prior to the shooting, Burns and his wife had gone to the garage where Cantave worked and “confronted him over the sale of a faulty engine” that his wife had purchased for her Volvo.

During this confrontation, Broadbent said, Burns “threatened the victim, saying he’d ‘come back to shoot up the place.’”

Sometime after this, Burns’ wife filed a civil suit against Cantave in the Dorchester District Court. On the morning Cantave was killed, Burns, his wife, and Cantave appeared there for a hearing, Broadbent said. The case was continued for a few weeks in order to allow the Burnses to gather additional documents related to the case.

Burns left the court and returned with Evans, Broadbent said. After the hearing, Burns, his wife, and Evans got into Burns’ car and left the court. As they were driving down the street, Burns pointed out Cantave, who was walking on Washington Street.

Still in his vehicle, Burns followed Cantave to the rear of 451 Washington St., where Cantave had parked his car. After Cantave got into his own vehicle, Evans got out of Burns’ car and shot the victim once in the head before getting back into the car and fleeing the scene.

Several witnesses heard the shooting and saw the aftermath, Broadbent said. One witness in particular was able to flag down a Boston Police officer within minutes and provide him with the getaway car’s license plate. Witnesses were able to provide officers with a description of the shooter, including the clothing the man was wearing, Broadbent told the court.

In the aftermath of the shooting, Broadbent said, another witness told investigators about statements that Burns and Evans made implicating themselves in Cantave’s murder. Burns and Evans “provided the witness with clothing and a firearm to be disposed of,” Broadbent said.

Although the firearm has not been recovered, some of the clothing that Burns and Evans wore that day was turned over to police. That clothing matched the description of the clothing allegedly worn by the shooter, and one piece of clothing has tested positive for gunshot residue, Broadbent told the court.

Both men were represented at today’s arraignment by attorney Matthew Kamholtz. Burns will be represented by attorney Matthew Feinberg, and Evans will be represented by attorney Bernard Grossberg. The two will return to court on June 16.