A southeast Missouri man was charged Thursday with first-degree murder in the shooting death of another man.

NEW MADRID, Mo. (AP) — A southeast Missouri man was charged Thursday with first-degree murder in the shooting death of another man.

George William Dawson III, 31, of New Madrid was charged after officers found a man suffering from gunshot wounds at a New Madrid home early Thursday. 

The victim, Donta Lamar Grissom, died at the home, KFVS reported.

Dawson was still at the home when officers arrived. Investigators say Dawson said he was taking medication for PTSD he suffered from serving in Afghanistan. He told them he was unsure if he was taking his medication properly, police said.

Court documents said witnesses told investigators Grissom was not threatening Dawson in any way before he was shot.

Dawson is being held in the Mississippi County Jail. Online court records do not list an attorney for him.