28-year-old Justin Miller was serving part of his sentence at the treatment facility.
SIOUX CITY, Iowa (KTIV) -
Authorities are searching for a missing inmate who walked away from Sioux City's Residential Treatment Facility on Friday.
28-year-old Justin Miller was serving part of his sentence there.
He was convicted of willful injury, causing serious injury and assault while participating in a felony.
Miller pled guilty to those charges in 2009.
Investigators say Miller punched and kicked then 14 year-old Bryan Hill until he lost consciousness while he waited for the bus near the corner of 13th and Nebraska back in 2007.
They also say Miller stole Hill's Game Boy.
Anyone with information on Miller's whereabouts is asked to call local authorities.