A Boston man is accused of gunning down another man at point-blank range on Blue Hill Avenue and then hitching a ride in the car of his girlfriend, who at 7-months pregnant is charged with being an accessory to the murder.

Triston Jules, 37, of Mattapan, in Suffolk Superior Court in Boston pleaded not guilty to the murder of George Deeble, 42, of Dorchester. He also faces three firearm charges related to the murder — a familiar charge to the defendant as court records show he has been arrested three times before on firearms offenses and does not have a license to carry.

While Jules was in the dock, handcuffed and surrounded by court officers, his girlfriend and co-defendant Shaharazahd Baker was not detained. She appeared in court, noticeably pregnant with the couple’s child, and pleaded not guilty to accessory after the fact to the murder.

Clerk Magistrate Edward Curley ordered Jules detained. Prosecutor Caitlin Grasso did not ask for Baker to be detained, citing the pregnancy. Grasso did ask that Baker be released under conditions that she have no contact with any of the witnesses in the case, and Curley granted that request.

The phones and alarms were buzzing at the Mattapan Boston Police Department District at around 4:45 a.m. April 27. Multiple calls reported a person shot around the intersection of Blue Hill Avenue and Fremont Street, reports confirmed by the activation of ShotSpotter technology that detected five gunshots in the area just minutes before.

When police arrived they found a man they would identify as Deeble suffering from gunshot wounds. Boston EMS would rush him to Boston Medical Center, where doctors pronounced him deceased.

Prosecutor Grasso summarized the alleged contents of surveillance footage from the crime scene as it happened. She said investigators saw a man they identify as Jules standing by the passenger side of a copper-colored 2019 BMW i8 when a white SUV pulls up alongside the BMW. Deeble, the front passenger, opens the door and starts chatting with the female driver of the BMW, keeping his hand on the door frame of the SUV the whole time.

Then a dark-colored sedan, which Grasso says Baker was driving, pulls up in front of Deeble’s SUV and double parks. Baker then gets out and walks toward the two other cars at bthe same time that Jules also moves toward Deeble. Grasso says he extends his right hand and then fires five shots at Deeble before he runs back to Baker’s car and the two take off.

When police arrested Jules on June 4, they say he had a fanny pack containing a Taurus G2C 9mm pistol, which he was not licensed to carry. He allegedly admitted to the shooting during an interview, but he claimed it was done in self defense. He also allegedly identified Baker as the one who picked him up from the scene.