The suspect in an early-morning Madison County homicide killed himself with a single gunshot wound to the head, authorities said.

After gunning down a man on Oldwood Drive, the suspect fled the scene and ended up at a home Brenna Lane in Hazel Green, said sheriff's Capt. Mike Salomonsky.

"As we approached the house and we made contact with our suspect, he then shot himself in the head one time and he is now also deceased," Salomonsky told reporters at a news conference this morning.

Update from Madison County sheriff's Capt. Mike Salomonsky on early-morning fatal shooting Posted by The Huntsville Times on Thursday, October 5, 2017

The initial shooting happened sometime around 4:30 a.m. on Oldwood just off Jordan Road near Shields Road. Salomonsky said the suspect, who hasn't yet been publicly identified, reportedly left the scene on foot. The suspect was found at him home on Brenna just off Canopy Road and shot himself sometime around 7:30 a.m. as the SWAT team approached, Salomonsky said.

"We still have to do the same investigation as if everybody was still alive," the captain said. "The same steps will take place: the scene will be documented, evidence will be collected, weapons will be collected, shell casings, photographs, all those things will be collected at both locations. Obviously there won't be an arrest because our suspect is deceased."

The victim in the case hasn't yet been publicly identified. Lt. Brian Chaffin said he expects later today to release more information about the people involved and the circumstances that led up to the shooting. The relationship between the victim and suspect isn't clear, but authorities said they are not family members.

Updated at 10:15 a.m.