Johnnie Bonnie, 22, of Jamaica Plain, was indicted on first-degree murder charges on Friday for the death this summer of Evens Archer, 17, after a party on Castle Court in the South End, the Suffolk County District Attorney's office reports.

Archer, a Dorchester resident, was shot in the back of the head shortly before 2 a.m. on June 29. He died three weeks later. After shooting Archer, prosecutors say, Bonnie ran away down Shawmut Avenue, tossing his gun in the process.