A missing teenager from Ohio may be in East Tennessee with her non-custodial father, according to the Tennessee Bureau of Investigation.

TBI believes Robin Roberts, 15, is traveling with William Roberts. The father has family in East Tennessee and formerly lived in Greeneville.

Investigators say William Roberts is a registered sex offender in Ohio with an offense against a 6-year-old. The father is a drug user, according to TBI.

TBI says the two may be traveling in a black Ford Ranger with the Ohio license plate number PJL4802.

Robin Roberts is around 5-feet-7-inches and weighs 110 pounds. She has brown eyes and light brown/blonde hair. William Roberts is around 5-feet-11-inches and weighs 220 pounds. He has brown hair and brown eyes.

Anyone with information, call TBI at 1-800-TBI-FIND.