Washington State Patrol continues to investigate what caused a single-vehicle crash that killed a Kalama man Saturday morning on Interstate 5.Nicholas Logue, 36, was driving south on the interstate when his vehicle veered right, left the roadway and crashed into a large light pole. He was pronounced dead at the scene. Two children in the car, Nealee D. Logue, 9, and Nash R. Logue, 3, were taken to Randall Children’s Hospital at Legacy Emanuel in Portland. Their conditions were not available Tuesday. Logue worked in maintenance for the city of Vancouver’s public works department, City Manager Eric Holmes said Tuesday. Logue died of blunt force injuries, according to the Clark County Medical Examiner’s Office. Trooper Will Finn said that there were no road hazards or any obvious reason for the driver to turn or swerve. The investigation is ongoing.Finn said Nealee Logue acted as a “little hero,” because she calmed down her little brother after the crash. “She was trying to do the best she could in a terrible situation,” Finn said.