YAKIMA, Wash. — The Washington State Patrtol said a Yakima pickup driver who stopped to retrieve a lost load Wednesday caused a three-vehicle collision that injured three people and brought Interstate 82 traffic to a standstill.

Jose Castaneda, 33, was heading east when he pulled over to collect something that fell from his 1997 Chevrolet pickup about 11:30 a.m. near the Nob Hill Boulevard interchange, according to a news release from the State Patrol. The release did not specify what fell from the truck.

When a 2006 Chevrolet Impala stopped to avoid hitting the load, it was struck by a 2013 Freightliner semitruck and pushed into the pickup, troopers said.

Two women in the Impala, driver Kim Devine-Lidke, 56, of Yakima, and Cindy Hosak, 60, of Yakima, were taken to Yakima Valley Memorial Hospital, troopers said. They were listed in satisfactory condition, a nursing supervisor said Wednesday afternoon

Castaneda was injured but not taken to the hospital. Lawrence Smith of Lakehead, Calif., the 59-year-old driver of the semi, was not injured.

Troopers cited Castaneda with failure to secure a load.

Traffic was temporarily congested around the Nob Hill interchange.