Some 23 members of the notorious Ghost Face Gangsters have been indicted for their roles in a drug-trafficking scheme, the U.S. Attorney’s Office said Tuesday.

Federal, state and local investigators discussed the arrests at at news conference at Cobb County police headquarters. The arrests include three leaders of the prison-based gang, which has been in Georgia more than 20 years.

RELATED: Ghost Face Gangsters reach beyond prisons, blamed for metro crimes

According to the Anti-Defamation League, there are at least 100 white supremacist prison gangs operating in the U.S., and Georgia is home to at least three, including the Ghost Face Gangsters. The group originated in California in the 1970s, according to the ADL, but an original founding member started the Georgia group in 1998.

The same gang has also been linked to high-profile cases, including the June shooting deaths of two prison guards in Putnam County. 

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