D.C. Councilman Jim Graham’s top aide pocketed cash-stuffed envelopes and other gifts in return for steering taxicab legislation through his boss’s office, law enforcement officials alleged Thursday.

Ted Giovanny Loza, 44, was arrested at his Columbia Heights home Thursday morning, shortly before FBI agents raided his office at the John A. Wilson Building. Loza, the Ward 1 councilman’s chief of staff, tinyurl.com/loza-indictment, to which he pleaded not guilty during a late afternoon arraignment.