Lone Grove Police Chief Robert Oldham confirmed Wednesday that the driver in a  rollover incident on highway 70 was pronounced dead at the scene.

"We believe he may have fallen asleep at the wheel," Oldham said. The driver, now identified as 25-year old Hugo Perez of Pampa, Texas, was pinned in the cab after the tanker carrying salt water left the roadway.  Oldham said they have no indication that anything else occurred with the incident.