Authorities on Thursday appealed to the public for help in finding a University of Minnesota student who was last seen Tuesday night leaving a dormitory on the school's Minneapolis campus.
Police officers from three law enforcement agencies scoured the Mississippi River by boat, and drones and a State Patrol helicopter searched from the sky for any sign of 20-year-old David Michael Miller, authorities said.
Police say that Miller, a third-year bioscience major from St. Peter, Minn., was last seen walking out of Wilkins Hall, a student dormitory in the northwest corner of campus, near Dinkytown, about 9 p.m. on Tuesday.
Surveillance footage appeared to show him walking west, in the direction of Interstate 35W, said U Police Chief Matthew Clark.
Miller hasn't been "seen or heard from since," authorities said.
Miller, who is described as 6 feet 1 and 175 pounds with green eyes and brown hair, was wearing dark pants and a dark jacket at the time, authorities said.
Miller's roommates, concerned that he never came home that night and then didn't show up for a final exam the following morning, reported his disappearance to campus authorities, Clark said.
Before his disappearance, Miller's roommates reportedly didn't notice anything amiss.