The elderly driver of a car that slammed into the back of a semi-truck Thursday died of his injuries.
Elmer Riley, 90, of Wallula, died overnight at Kadlec Regional Medical Center in Richland.
His wife, Mildred A. Riley, 90, died at the scene of the accident Thursday on Highway 12 at Humorist Road.
Truck driver Jerman Pimentel, 31, of Quincy, was stopped at the traffic light at Humorist Road when Elmer Riley's Toyota Camry hit the truck and the cattle trailer it was hauling, the Washington State Patrol said.
Pimentel was not injured.