A 74-year-old Leawood man was killed Saturday morning when he was struck by a vehicle while walking on Kansas Highway 10 east of Lawrence.

The man, whose name has not been released pending notification of his family, was in the highway’s eastbound lane shortly before 5 a.m. when he was struck just west of County Route 1057, Sgt. Kristen Channel of the Douglas County Sheriff’s Office said in a news release.

It is not known why the man was on K-10, Channel said.

The driver of the vehicle that struck the victim stayed on the scene after the incident, Channel said. The Douglas County Sheriff’s Office and the Kansas Highway Patrol are investigating the fatality.

Traffic was reduced to one lane on eastbound K-10 while law enforcement investigated the scene. All lanes on the highway were reopened at about 9:30 a.m.