A man accused of joining Al Qaeda in the early 1990s and helping teach fellow Muslim extremists how to bomb U.S. and European targets pleaded guilty to planning terrorist attacks.
Christopher Paul, 44, accepted a plea bargain in Columbus calling for a 20-year prison term. He could have faced a life sentence.
U.S. District Court Judge Gregory Frost accepted the plea but said he would not give final approval to the deal until he saw the pre-sentence report, which is not expected for several months.
Two others have pleaded guilty: Nuradin Abdi in connection with an alleged plot to blow up an Ohio shopping mall, and Iyman Faris in connection with a plot to destroy the Brooklyn Bridge.