CALDWELL, Idaho (AP) — A 57-year-old southwest Idaho man has died after being struck by a vehicle on the side of Interstate 84 while trying to retrieve items that had fallen out of his pickup.

Idaho State Police say Guy Isaac of Nampa died Wednesday on the highway in Caldwell.

Police say Isaac was traveling eastbound when cargo fell from his 2006 Chevrolet Silverado at about 9:45 a.m. Police say he stopped on the right shoulder and began removing debris from the highway.

Police say traffic started backing up and 36-year-old Heather Lott of Caldwell moved from the left lane into the right lane and then onto the right shoulder to avoid a collision, where her 2010 Ford Edge struck Isaac.

Isaac died at the scene.

The crash is under investigation.