GEORGIANA (AP) — A killing has rattled a normally quiet town in south Alabama.

Authorities say 72-year-old Dorothy Leatherwood was found dead in her home in Georgiana a week ago. Now, police say it appears the woman knew the killer.

Butler County Sheriff Kenny Harden told WAKA-TV there weren't signs of anyone breaking into Leatherwood's house, and very few people typically visited her.

The sheriff said friends and family told police the woman always kept her home locked.

People in town are nervous, and Georgiana police say they are tripling the number of neighborhood patrols in the town. Police Sgt. J.C. Salter says officers want people to feel safe.

Investigators say they have a person of interest in the case, and they're looking for the suspect.