NEW YORK, April 28 -- A New York man yesterday pleaded guilty to taking part in the 2002 murder of pioneering hip-hop star Jam Master Jay of famed group Run-DMC as part of a dispute over a drug deal, according to federal prosecutors.

Appearing in court in Brooklyn, Jay Bryant, 52, admitted to playing a role in the fatal shooting of Jason Mizell, better known by his stage name Jam Master Jay, and faces up to 20 years in prison, the United States Attorney's Office for the Eastern District of New York said in a statement.

Bryant was accused of opening a locked fire-escape door to allow two armed men to enter Mizell's New York City recording studio where one of them shot the hip-hop star dead.

The two men, Karl Jordan and Ronald Washington...