A Hyde Park man was murdered in his car in the Dorchester District Court parking lot last week minutes after he and a suspect's wife left a court hearing on a suit over a car engine, the Suffolk County District Attorney's office says.

Mario F. Burns, 37, was ordered held in lieu of $750,000 bail today as an alleged accomplice after the fact to the murder of Charles Contave of Hyde Park on March 29, the Suffolk County District Attorney's office reports.

Police say Contave was found dead in his car in a court parking lot behind 451 Washington St. around 10:50 a.m. Prosecutors say Burns's wife had sued Contave over the status of the engine and both were in court that morning for a hearing on the matter.

Using a description from a witness, police stopped Burns as he drove through Grove Hall, the DA's office says, adding three other people were in the car with him: His wife, his mother-in-law and a man prosecutors declined to identify or say if he was connected with the murder. Police have yet to charge anybody with Contave's murder. According to the DA's office: "All four were interviewed, denied involvement in the shooting, and gave conflicting statements regarding when and where the male passenger had entered the car."