FRIDAY UPDATE: Detectives in Blount County are still searching for any clues about what happened to a missing woman.

It's been a month since anyone has seen 69-year-old Ruth Walker.

Blount County Sheriff's Office authorities say they're "chasing down every lead."

At her house on Butterfly Gap Loop south of Maryville, her normally well-manicured yard is becoming overgrown. There's a freshly planted garden there, with bags of mulch stacked to the side.

Authorities believe she last was seen between May 2 and May 4. Walker's cars and all of her belongings are still at the house.

Jeff French, Blount County's chief deputy, said they've searched the house and also the large piece of land that belongs to Walker, whose husband died five years ago.

"We combed the property and actually had a K-9 on the property to do a search as well," French said. "There was no sign of a struggle. Nothing that would lead us to believe there was an altercation in the house or around the house. Everything seems to be in-place where it needed to be."

Walker's neighbors say they fear the worst, and add she would not leave without telling anyone.

The Sheriff's Office is offering a $2,500 reward for anyone with information that helps investigators find Walker..

If you have any information about Mary Ruth Walker, call the Blount County Sheriff's hotline at 865-273-5200.

Tips may be left anonymously.

PREVIOUS STORY: The Blount County Sheriff 's Office is offering a reward for information that helps them find a missing woman.

69-year-old Mary Ruth Walker disappeared from her home on Butterfly Gap Loop on May 4. Authorities said her vehicle was still parked at her home. A neighbor reported her missing on May 9.

Investigators are following up on every lead, but so far have not been able to locate Walker.

Sheriff James Lee Berrong announced a $2,500 reward for information about what happened to Walker on Thursday.

Anyone who has seen or spoken to Walker is asked to call the BCSO investigations unit at (865)-273-5001.

People can also call the anonymous Crime Hotline at (865)-273-5200 or leave at tip on the BCSO website.