ELIZABETHTON, Tenn. (WJHL) — A person of interest in a Carter County homicide investigation has been arrested, according to authorities.

Sheriff Mike Fraley confirmed Tuesday that Brandon Carrier is in police custody, and a press release confirmed that he was arrested in connection to a previous violation of probation warrant.

Carrier was named a person of interest in a homicide investigation involving his wife, Shannon Marie Isaacs, who has not been seen since Aug. 23, the same day that authorities found a woman’s remains inside a burned vehicle on Dry Branch Road police believe are Isaacs’. Fraley said forensic results have not yet positively identified the remains.

Fraley said two Carter County sheriff’s deputies took Carrier into custody Tuesday around 3:30 p.m.

“I’m sure that the public is relieved as am I,” Fraley said. “We have put hundreds of hours into this, and there’s been the TBI. The TBI has been very helpful in this along with our officers working around the clock, and we’ve investigated dozens, if not hundreds of leads.”

On Tuesday night, Isaacs family expressed gratitude to those authorities who have worked to find Carrier.

“I didn’t believe it,” Shannon Isaacs brother, Shane Crowe said. “I actually asked Mr. Fraley you know if he could call me, I wanted to hear his voice tell me.”

The family is also thankful for the help of community members.

“My whole family is very blessed that everybody kept posting, kept sharing, kept commenting,” Isaacs son, Blake, said. “They didn’t give up, everybody kept trying and that’s about all we could ask for.”

The work doesn’t stop now, Isaacs family thinks there may be people out there who still know valuable information, and they’re asking those people to go to the authorities now.

“If there’s still any parts missing that anybody knows, then you know just go ahead and tell,” Crowe said.

No word yet on where or how Carrier was found, Fraley said that information is going to be key to the investigation, so he’s not ready to release details at this time.

This is a developing story. Check back for updates.