Monday evening, Bellefontaine Police responded to a home in the 100 block of North Stanley Street.
Matthew Johnson, 38, of Bellefontaine, was seen running from the scene.
A victim reported earlier in the day that her home had been broken into and Johnson was listed as a suspect.
Officers responded to the residence and checked the area and found Johnson nearby on East Columbus Avenue.
At that time officers noted that Johnson had a gun and they called out to him.
He ignored officers and disappeared from view, behind a home.
A gunshot was heard and after a short time, officers located Johnson in a backyard, lying motionless on the ground.
He was pronounced dead at the scene from an apparent self-inflicted gunshot wound.
Johnson was the defendant of an ongoing felony sex case that involved a victim who resided at the North Stanley Street home.
Bellefontaine Medics and the Logan County Coroner assisted at the scene.