Twenty-one-year-old Carl Conyers, a student at the University of Houston, was last seen Tuesday by his roommate.
His girlfriend, Daisha Lewis, told WWJ Newsradio 950 in Detroit that she was supposed to meet him on campus Wednesday, but that he never showed. When she and friends checked his apartment they found some clothes and other items missing.
Houston police spokesman Victor Senties declined Thursday to say who reported Conyers missing, adding that police take every report of a missing person seriously.
Rep. Conyers' communications director didn't immediately respond to an email seeking comment.
The Detroit Democrat was first elected to Congress in 1964 and is its longest-serving member.
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