Photo of Casey Lawhorn from the Jasper County Sheriff's Department Facebook page

Law enforcement officers have found a body they believe may be Casey Lawhorn, a suspect in two fatal shootings in East Ridge, Tennessee.

Lawhorn, 23, apparently fled to Mississippi from his home, near the Tennessee-Georgia border, in a gold Ford Taurus.

Warren Strain, the spokesperson for the Mississippi Bureau of Investigations, said the body, not yet officially identified as Lawhorn, was found approximately 100 yards from the abandoned Ford Taurus, near mile marker 118 off of Interstate 59.

Jasper County Sheriff Randy Johnson stated on the department’s Facebook page that it appeared Lawhorn had died from a self-inflicted gunshot wound.

Strain said Lawhorn announced via social media that he had murdered his mother and a friend Saturday.

East Ridge Assistant Police Chief Stan Allen said in a statement that the bodies of Lawhorn’s mother, Vi Lawhorn, and a friend were found with gunshot wounds to the head at a home in East Ridge. Police have identified the second victim as 22-year-old Avery Gaines of Ringgold, Georgia.

Allen said Casey Lawhorn notified authorities about the bodies before fleeing the state.

Allen said police believe the announcement about the slayings, made on Facebook, was posted by Lawhorn because it had details only the killer would know.

Lawhorn said in the posts that Gaines was sleeping at his house while he left early Sunday to pick up his mother at a bar. After Lawhorn returned home with her, he began putting his plan into action, according to the man’s post.

“I nervously paced for a few minutes, playing the coming events out in my head, which were vastly different from what actually happened. I walked up to Avery as he slept and shot him in the head once, he seemed to die instantly.”

He then shot his mother, but she didn’t die immediately, according to the posts.

“She started screaming the worst scream I’ve ever heard. Movies really don’t do justice to how true terror sounds,” he wrote.

He said in the posts he shot at her twice more before it was over and then he took money and heroin from Gaines. “I was shaking from adrenaline,” he wrote, but said he didn’t feel anything else except disgust at the corpse.

Lawhorn signed off by saying their pets were safe: “I didn’t hurt our dog or cat, in case anyone was wondering about the animals.”

The Associated Press contributed to this report.