Nearly 25 years after the death of Run-DMC's Jam Master Jay, a man named Jay Bryant pleaded guilty in federal court. Bryant admitted that he helped others ambush the DJ, confessing to knowing that a gun would be used.

Nearly 25 years after rap star Jam Master Jay of Run-DMC was killed, a man admitted in court on Monday to a role in the shooting that stymied investigators for decades. Jay Bryant pleaded guilty to a federal murder charge, telling a judge that he helped other people get into a recording studio to ambush the DJ, born Jason Mizell. “I knew a gun was going to be used to shoot Jason Mizell,” Bryant told a federal magistrate. “I knew that what I was doing was wrong and a crime.” Bryant’s admission...