An Arkansas National Guardsman is accused of shooting and killing a runner Saturday morning in western Arkansas.

Police arrived on the scene near Wells Lake Road just before 7:00 a.m. Saturday. They say Brent Morrison, 44, was out running when he was shot in the torso. He was pronounced dead.

John Suleski, 24, was arrested at the scene and is being held at the Sebastian County Detention Center in Fort Smith. The 188th Wing of the Arkansas Air National Guard confirms to KATV affiliate 40/29 that Suleski is a staff sergeant who has been with the 188th for about a year. He is a photojournalist for the public affairs office and also a former Marine.

Authorities say Suleski did not know the victim.

"It's very difficult to understand how or why this happened. I think the victim was in the wrong place at the wrong time. And suspect also -- wrong place, wrong time," Cpl. Barbara Williams said.

Suleski is being held for first degree murder and unlawful discharge of a firearm in city limits. Morrison's body has been sent to the State Crime Lab for an autopsy.

A memorial run will be held in Morrison's honor next weekend.