Today federal agents raided the Northern Virginia offices of the World Assembly of Muslim Youth (WAMY): U.S. Raids N.Va. Office of Saudi-Based Charity.

Alexandria, Va. (AP) - Federal agents have raided the Alexandria headquarters of a Saudi-based charity founded by a nephew of Osama bin Laden.

The Washington Post reports that the FBI (website) , immigration agents and the Joint Terrorism Task Force raided the World Assembly of Muslim Youth on Friday. All the office’s files and computer hard drives were seized, and the group says a volunteer board member was arrested on immigration charges.

The charity strongly denies any terrorist ties and says the government had told them the probe is focused only on “immigration issues.” The group acknowledged that bin Laden’s nephew, Abdullah bin Laden, was involved in forming its branch in Northern Virginia, it says people shouldn’t assume that means it has any terrorist connections.