SAN ANTONIO, Texas--Prosecutors say a national leader of the Bandidos biker gang faces up to life in federal prison after pleading guilty to racketeering, drug trafficking and extortion charges in Texas. 

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

A May 2015 gunfight during a meeting of biker groups 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. 

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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. 

On Monday, a motorcyclist killed in a crash as he was speeding away from police on what authorities say was a stolen bike was identified as one of the bikers indicted in the deadly May 2015 shooting at a Waco Twin Peaks restaurant.

Authorities in Gatesville say 29-year-old Trey Alston Short, of Temple, was killed Friday night when his motorcycle reported stolen in June in Waco collided at high speed with a minivan.  Police in the town about 35 miles west of Waco had attempted to pull him over. About a minute later, he collided with the van, turning it over and throwing him from the bike.

Short was among bikers indicted last November for the shootout involving rival biker gangs and police. Nine people were killed and 20 injured.