(Updates death toll, details of crash) BIRMINGHAM, Ala., Nov 20 (Reuters) - At least three teen-agers died on Monday when a school bus carrying dozens of students veered off an overpass in Huntsville, Alabama, and plunged to a street below, U.S. police said. Television images showed the front end of the yellow school bus had been crumpled by the apparent impact with the road and its windows shattered. Huntsville Police Chief Rex Reynolds said that three teen-age girls died and many of the bus' passengers were taken to local hospitals to be treated for cuts and other injuries. He told CNN later that the bus landed upside down on the road below the overpass and that another vehicle was believed to be involved. "We do have a witness to the accident," Reynolds said separately in a televised news conference. He said, "A car may have come close to and/or struck the bus, causing the bus to strike the rail and ultimately leaving the elevated part of the interstate." The bus was carrying 44 people including the students and the driver from Lee High School in Huntsville to a technical school, said Denise Taylor, a spokeswoman for the city of Huntsville. Huntsville lies about 100 miles (160 km) north of Birmingham near the Tennessee state line.
