SAN ANTONIO — Prosecutors say a Bandidos biker gang leader has pleaded guilty to racketeering, drug trafficking and extortion charges in Texas and faces up to life in federal prison.

Sergeant-at-arms Justin Cole Forster remains in custody in San Antonio pending sentencing next year.

A gunfight in May 2015 during a bikers’ meeting in Waco left nine people dead and led to more than 170 arrests. Prosecutors in January announced Forster was among several Bandidos leaders indicted and accused of deadly violence against a rival gang since 2013.

Forster pleaded guilty Friday to four counts of a superseding indictment. Prosecutors say the investigation involved conspiracy to participate in murder, attempted murder, robbery, extortion, racketeering and drug trafficking.

Three other Bandidos leaders or members charged in the superseding indictment await trial.