Authorities say they found a 3-year-old in a diaper driving a motorized big wheel alongside a busy Florida highway, reports say.

Citrus County Sheriff's officials told local media outlets they were alerted by motorists who feared for the child's safety. Deputies said several vehicles created a blockade around the boy to keep him from entering traffic. Authorities said the child, clad in a shirt and diaper, was in the toy vehicle's driver seat when they arrived Wednesday.

Authorities didn't release the father's name. Reports say he told deputies he was in the bathroom when his son used a small chair to unlock a door and left without his knowledge. WFTS Tampa Bay (http://tinyurl.com/z53t6kk) reports the father said he immediately began searching for him.

Authorities didn't immediately return calls for further information.