Saudi native charged with fighting for al Qaeda March 20, 2013 -- Updated 1734 GMT (0134 HKT) (CNN) -- A federal grand jury in New York has indicted a Saudi native on charges of joining al Qaeda in fighting U.S. forces in Afghanistan and conspiring to bomb U.S. diplomatic facilities in Nigeria. Ibrahim Suleiman Adnan Adam Harun, also known as "Spin Ghul," was extradited from Italy to the United States in October. The six-count indictment accuses him of, among other things, joining al Qaeda after arriving in Afghanistan in 2001, fighting U.S. and coalition troops in Afghanistan in 2002 and 2003, and traveling to Africa "with the intent to conduct attacks on U.S. diplomatic facilities in Nigeria," according to the office of the U.S attorney for the Eastern District of New York. The indictment, made by a grand jury last month, was unsealed Wednesday. Harun was born in Saudi Arabia but claims citizenship in Niger, the Justice Department said. "Vowing allegiance to al Qaeda and training to commit violent jihad are not the worst of Harun's alleged crimes," FBI spokesman J. Peter Donald said. The allegations include actually attacking U.S. troops and plotting to use explosives to kill U.S. diplomats. As alleged, Harun not only intended to, but did, commit acts of terrorism against Americans. Now he is subject to the American justice system. We remain committed to protecting the safety of Americans and our national security," Donald said. CNN's Carol Cratty and Ross Levitt contributed to this story.