Jordan Beavers got out of his father's truck at the North Main Street-Madison Street intersection about 11 a.m. and ran away, police said.
The youth went to his home and packed a few items before leaving, a Shelbyville police report said. The report added Beavers has family in the Lewisburg area.
Beavers has his father's name tattooed on one wrist and his mother's name on the other, praying hands tattooed on one arm and was wearing a white collared shirt with tan khaki pants when last seen, police were told.
Call Shelbyville Police Department, (931) 684-5811, with information.