An alleged senior al Qaeda figure suspected of involvement in the 1998 bombing of the U.S. embassy in Kenya, which killed more than 200 people, offers a not guilty plea Tuesday.

The man known as Abu Anas al-Liby appeared in federal court in New York where he entered his plea.

His appearance comes 10 days after a U.S. Army squad captured him in Tripoli and sent him to a U.S. Navy ship in the Mediterranean Sea for interrogation.

It's not immediately known whether al-Liby cooperated with U.S. interrogators.