UPDATE: Brianna Tuggle has been found and she's safe.
Tennessee Bureau of Investigation has issued an endangered child alert.
"We need your help finding 14-year-old Brianna Tuggle, missing from Soddy Daisy in Hamilton County," TBI officials said. "She was last seen at her home around 9 p.m. yesterday. Brianna has a known medical condition and does not have her necessary medication. Brianna is 5’2” and 98 lbs. with green eyes and brown hair. She was last seen wearing black leggings and gray t-shirt with 'XXL' on the front. Brianna may be in route to Clarksville. If you have seen Brianna, call 1-800-TBI-FIND or the Soddy Daisy Police Department at 423-332-3577. Please, share to help spread the word."