LINCOLN, Mo.-— A man has been arrested in a deadly shooting at a west-central Missouri mobile home park.

The Benton County Sheriff’s Office says 27-year-old Caleb L.D. Shephard, of Cole Camp, was shot Friday night just outside the town of Lincoln. The Sedalia Democrat reports that he was rushed in an ambulance to a helicopter landing site, where he died.

Deputies reported the arrest of 21-year-old William J. Heffernan for the shooting. Shephard was shot outside the suspect’s residence. Heffernan is being held on a $1-million bond on requested charges of 2nd-degree murder, armed criminal action and tampering with evidence, according to the sheriff’s department.

Benton County Sheriff Eric Knox said a motive for the shooting hasn’t been determined.

Shephard’s obituary described him as a U.S. Army veteran and a father to two sons.

-The Associated Press contributed to this report.