NEW YORK (AP) _ Ten alleged members of a notorious drug ring that grew from a Brooklyn street gang were indicted on federal charges they murdered nine people and ran a crack operation, officials said.

Thursday's indictment charges them with acts of extreme violence aimed at rival drug traffickers, errant workers and potential witnesses against the gang.

The Raysor Organization _ headed by brothers Umeme Raysor, 25, and Chaka Raysor, 27 _ grew over the past 11 years from a neighborhood gang to a sophisticated, large-scale organization with operations in Virginia, North Carolina and Delaware, the indictment said.

At its peak, the gang took in as much as $90,000 a week from its Brooklyn business and earned more than $4 million in overall drug profits, the indictment said.

The 10 are charged under the Racketeer Influenced and Corrupt Organizations Act, traditionally used by prosecutors to target organized crime. The federal RICO act requires proof only that a suspect was part of an enterprise that committed a murder, not that he was the actual killer.