it is 5:00 a.m. in the east. developing this morning, a naturalized american citizen back from terrorism training in syria with plans to attack on u.s. soil. this man now in custody. he is charged with providing material support to terrorists and lying to the fbi. evan perez is in washington with the very latest. >> reporter: john and christine, mohamud is the terrorist threat that the counterterrorism officials warned us about for months. an american who traveled overseas to fight for al qaeda and come back to plot an attack at home. the 23-year-old resident of columbus ohio is providing terrorist support to nusra. he became a u.s. citizen last year. two months later, in april of 2014 he flew on one way ticket to greece with plans to make his way to turkey and then to syria. justice department prosecutors say he got training in guns and