Several Vallejo rappers with ties to the record label founded by slain rap artist Andre “Mac Dre” Hicks have been charged in federal court with drug offenses for allegedly being part of a wide-ranging Ecstasy trafficking ring, authorities said Tuesday.

Federal agents arrested 25 people in Vallejo, Fairfield, Oakland, Stockton, Los Angeles, New York and Oklahoma City.

Some are associates of Thizz Entertainment, the record label founded by Hicks, who was shot dead in 2004 in Kansas City, Mo., federal investigators said. Thizz has its origins in a Vallejo bank-robbery ring known as the Romper Room Gang, authorities said.

During the investigation, agents seized 45,000 Ecstasy pills, four pounds of crack cocaine, a half pound of heroin, $200,000 in suspected drug money and two Audi automobiles, each worth at least $50,000.

The case focused on drug distributors based in the Crest neighborhood of Vallejo, which is known for narcotics activity and violence, Special Agent Brian Nehring of the Drug Enforcement Administration wrote in an affidavit filed in U.S. District Court in Sacramento. The drugs were transported outside the state, he said.

Lyrics of many Thizz artists “glorify and promote the use and distribution of MDMA pills,” Nehring wrote, referring to Ecstasy.

Among those charged is Michael Lott, a rap artist also known as “Miami the Most,” who helped take over Thizz after Hicks was killed, authorities said. Other rappers charged include Major “Dubee” Norton, Gaylord “Geezy” Franklin and Bruce “Little Bruce” Thurmon.