Federal prosecutors said they have a "staggering amount of evidence" to convict dozens of members of a Detroit-area motorcycle gang, who are accused of a violent criminal enterprise.
The government said more than dozen current or former members of the Devils Diciples are cooperating with the FBI and ready to testify at trial.
Assistant U.S. Attorney Saima Mohsin made the disclosure this week in a court filing that seeks to keep the group's president in custody while awaiting trial.
Mohsin said Jeff "Fat Dog" Smith is responsible for an "interstate ... rampage of drugs, violence" and other crimes.
He faces a detention hearing Tuesday in Detroit federal court.
Forty-one members of the Devils Diciples or their associates are under indictment.