Fourth person charged in attack on Ball

Published Jan. 17, 2013 12:00 a.m. ET

foxsports

A fourth person has been charged in an attack on Wisconsin star running back Montee Ball last summer.

An arrest warrant has been issued for 27-year-old Karlis Griffin. A criminal complaint says Griffin stomped on Ball's head during the attack as Ball walked home with friends at bar time. Ball suffered a concussion and says he doesn't remember the attack.

The State Journal says unlike the three others charged in the assault, Griffin is not a University of Wisconsin-Madison student and has no permanent address. Griffin is charged with substantial battery.

Two of the three others charged have pleaded guilty to substantial battery and have been placed in a first-offenders program. The third is scheduled for a plea and sentencing hearing on Friday.