A woman extradited from Columbia was arraigned Monday on terror charges for allegedly supporting leftist rebels in her native country. Luz Mery Gutierrez Vergara, 32, pleaded not guilty to providing support to the Revolutionary Armed Forces of Columbia, or FARC. She faces 15 years in prison if convicted. An indictment against her and 10 other Colombians filed in September 2007 accuses Gutierrez of running a FARC radio call center in Villavicencio, Columbia, where money and messages were exchanged. The indictment says Gutierrez helped arrange FARC's purchases of weapons and ammunition, including 7.62 caliber rifles. The FARC has been designated by the United States as a foreign terrorist organization since 1997. The rebels held three American defense contractors hostage for more than five years after their surveillance plane crash landed in the jungle in 2003.