"A 54-count superseding indictment was unsealed today, charging 12 members and associates of the Mongols Motorcycle Gang (Mongols) with racketeering conspiracy," the release said.
Federal prosecutors said the 12 members and associates of the motorcycle gang had committed violent crimes including murder, attempted murder, assault, kidnapping, robbery, extortion, witness tampering, money laundering and interstate travel in aid of racketeering, according to the release.
Three other suspects connected to the gang have been charged with other crimes including large-scale trafficking of illegal drugs including methamphetamine and lethal opioids, the release said.
The Mongols are based mostly in California, but the gang has chapters in US states across the country, as well as Australia, Canada, Denmark, Germany, Indonesia, Malaysia, Mexico, Singapore, Switzerland and Thailand, the release said.
One of the gang members who was charged on Thursday, Stephen Cole of Clarksville, Tennessee, remains at large and his location is unknown.