Federal authorities in New York have indicted a man on charges of conspiring to provide material support to the Islamic State group.

U.S. Attorney Robert L. Capers and other officials announced the unsealing Wednesday of the superceding indictment naming Azizjon Rakhmatov.

He's been added to the case involving Abdurasul Juraboev (ahb-DEWR'-ahl-suhl jur-AH'-boh-ehv), who pleaded guilty in August.

Authorities say Juraboev planned to travel to Syria to fight on behalf of the Islamic State and threatened to commit extremist acts in the U.S., such as killing the president or bombing Coney Island.

Three other men have pleaded not guilty. Prosecutors say Rakhmatov, an Uzbek, provided travel expenses for one of them.

There was no immediate information on an attorney who could comment on his behalf.