(Updated) – The Missouri State Highway Patrol said the man’s body found earlier this week on 36 Hwy was killed by a semi truck.

According to crash reports, 36-year-old William Dau of St. Joseph was walking in the westbound lane of US 36 when he was hit by a 2014 Peterbilt driven by 60-year-old Mark Conn of Albany, Mo.

The crash was reported to have taken place around 2:15 a.m. Tuesday.

However, it wasn’t until around 6:30 a.m. the Missouri State Highway Patrol received word of a body found on the Highway, that’s when Sgt. Jake Angle said troopers first began investigating the case.

Dau was pronounced dead at the scene.  Preliminary autopsy results indicated the cause of death was extensive crush trauma, with injuries that are consistent with having been struck by a vehicle.

However, Sgt. Angle said the semi driver, Conn properly reported the incident to the Buchanan County Communications Center prior to the Highway Patrol receiving word of a body found, expect he did not realize he had hit a human.

“He wasn’t sure what he hit, he thought he hit a deer and so when he reported it to the Comm Center that’s what he reported it as,” Sgt. Angle said.

Authorities said no charges will be filed.

“For whatever reason he (Dau) was walking in the driving lane in the dark and he got struck,” Sgt. Angle said. “It’s still an ongoing investigation.”