( CNN ) -- A Michigan teenager pleaded guilty Monday in the mob beating of a 54-year-old grandfather after he inadvertently struck a child with his truck in April , according to a news release from the Wayne County Prosecutor 's office . Bruce Wimbush , 18 , pleaded guilty to assault with intent to do great bodily harm , according to the news release . Wimbush admitted in court Monday that he punched the driver , Steven Utash , in the jaw and was among a `` large group of people '' that attacked the man in April . The teen told Judge James Callahan that after seeing Utash hit a child , he `` got emotional '' and his anger took over , according to CNN affiliate WDIV . `` I have a little brother and when I saw the kid , all I could see at the time was my little brother , '' Wimbush said , according to WDIV . The charge was reduced by prosecutors from assault with intent to murder with the agreement that Wimbush will testify in future proceedings related to the assault , the release said . Three other adult suspects are charged with attempted murder in the attack while a fourth , a juvenile , is charged with assault and ethnic intimidation . They are scheduled to appear in court this week , according to the prosecutor 's office . Wimbush will be sentenced on July 7 and faces up to 10 years in prison , according to the prosecutor 's office . Utash , the driver , was hospitalized in a coma after the attack . He returned home in May after spending more than six weeks in a hospital and rehabilitation center , according to a `` Help Steven Utash '' Facebook page post . The boy struck by Utash 's vehicle was treated for a leg injury at a local hospital and then was released home , according to the prosecutor 's office . Severely beaten Detroit driver discharged after 6 weeks . Daughter of severely beaten Detroit driver says he 's breathing on his own . 'Race is being looked at ' as a possible motive in attack on Detroit driver . CNN 's Stephanie Gallman and Kevin Conlon contributed to this report .
An 18-year - old pleaded guilty in a mob attack on a Detroit bus . The driver had hit a child in an accident . Bruce Wimbush says he got ` ` emotional '' after seeing child abuse , he then hit the driver . He pleads guilty to lesser charge in exchange for testimony against him in case .