Adrien Broner was found in a vehicle riddled with bullets and arrested on an open warrant overnight, according to Cincinnati police.
The one-time four-division champion, who lives in Cincinnati, was booked into the Kenton County Detention Center at 1:18 a.m. and released at 5:10 a.m. after posting $503 bond, jail records show.
Broner, 28, is scheduled to appear in court April 27.
Covington police took him into custody overnight after stopping a white Chevrolet Suburban crossing into Kentucky, according to police.
The Suburban had been shot about eight times.