From CNSNews:

Fourteen miles from the U.S. Capitol, a basement-run organization with alleged ties to Hamas and al Qaeda is a crucial link in the planning of any future terrorist attacks against the United States, according to several terrorism experts who analyzed documents and other information obtained in a CNSNews.com investigation.

The United Association for Studies and Research (UASR), based in Springfield, Va., is publicly identified as a Muslim think tank but has multiple ties [warning: PDF file] to the terrorism underworld, according to the CNSNews.com sources, who are both inside and outside government...

I don't know if there's any relation with the recently-raided Islamic Center also in Virginia ("Feds Search Virginia Islamic Center", update here).