Adam Lane Herron told authorities he woke up early Thursday morning to a man dragging him by his feet from his bed.
Herron, 34, told deputies the man dragged him toward the front door of his home in Charleston, Tennessee — but that Herron also managed to grab his father's shotgun from under his pillow.
With that, Herron fired one shot at the man who fell off the porch, the Bradley County Sheriff's Office said, adding that Herron called 911 at 12:47 a.m.
Emergency services arrived and pronounced the suspect, William Pappageorge, dead.
A search warrant was obtained for the residence, and a shotgun was located on the porch, the sheriff's office said.
Because Herron is a felon — convicted of aggravated burglary in 2010 — it's unlawful for him to possess a firearm, the sheriff's office said.
Now Herron is being charged with prohibited weapon and unlawful possession of a firearm, the sheriff's office said, adding that he was being held in jail Thursday on a $10,000 bond.