A Heyburn man was killed early Tuesday morning along Interstate 84 when he was struck by a semi truck after walking in a lane of traffic.

Ricky T. Swensen, 44, was killed near milepost 176 in Jerome County around 4 a.m., according to Idaho State Police, after driving on westbound I-84 and stopping for vehicular problems. Swensen left his vehicle and walked into the westbound lane, according to an ISP press release, when he was struck by a semi pulling three trailers.

Swensen was thrown onto the north side of the interstate. He was later pronounced dead at the scene.

The semi was driven by Richard F. Gebhard, 64, of Meridian, who was wearing his seat belt and not injured in the collision. Alcohol is not believed to be a factor in the crash, ISP reported.

The incident is under investigation by Trooper Chris Pohanka with assistance from Sgt. Kevin Haight, Master Kevin Winn, Trooper James Kilton and the Jerome County Sheriff's Office.