A 24-year-old Las Vegas man was hit and killed while walking on northbound U.S. 93 shortly after midnight Friday morning.
Authorities said they don't know why the man, identified as Clinton J. Gastineau, was walking in the middle of the traffic lane about 45 miles south of Hoover Dam. Gastineau was first hit by a Ford Bronco, then by a semi-truck.
The driver of the truck did not stop. The driver and passenger of the Bronco were treated on-scene by the Lake Mohave Ranchos Fire Department for shock.