Fetty Wap Is Arrested on Federal Drug Charges at Citi Field

The rapper Fetty Wap was arrested by F.B.I. agents at Citi Field in connection with federal drug charges, according to an indictment that was unsealed on Friday.

The artist, whose legal name is William Junior Maxwell II, was arrested on Thursday and was scheduled to be arraigned at a federal court in Central Islip, N.Y., later Friday. He and five co-defendants, including a New Jersey correction officer, were charged with conspiring to distribute and possess controlled substances.

Officials said the defendants had transported, distributed and sold more than 100 kilograms of drugs, including heroin and fentanyl. The other five defendants, who were arrested on various dates within the past month, were also charged with using firearms in connection with drug trafficking.

“The pipeline of drugs in this investigation ran thousands of miles from the West Coast to the communities here in our area, contributing to the addiction and overdose epidemic we have seen time and time again tear people’s lives apart,” Michael J. Driscoll, an assistant director-in-charge in the F.B.I., said in a statement.

Mr. Maxwell, 30, who hails from Paterson, N.J., rose to fame with his 2014 single “Trap Queen,” in which he sings and raps about cooking drugs with a partner. The New York Times once described it as “shimmering and yelping and borderline whimsical.” He released a new mixtape called “The Butterfly Effect” last week.

Citi Field on Thursday hosted the first night of Rolling Loud, a traveling hip-hop festival. 50 Cent and Mr. Maxwell were among the performers on the bill.

Mr. Maxwell’s lawyer, Navarro W. Gray of Hackensack, N.J., said in a statement, “We pray that this is all a big misunderstanding.” Mr. Gray said he hoped that Mr. Maxwell would be released on Friday “so we can clear things up as soon as possible.”

The artist’s label, 300 Entertainment, did not immediately respond to requests for comment.

Timothy D. Sini, the district attorney for Suffolk County, said the defendants had used eastern Long Island as the base for a multimillion-dollar drug ring, which officials said also operated in New Jersey.

“They were wholesale drug dealers who pumped massive quantities of narcotics into our communities,” Mr. Sini said in a statement, adding, “The magnitude of this operation was enormous.”