SIOUX FALLS, S.D. (MITCHELLNOW) Attorney General Marty Jackley says the Division of Criminal Investigation is now leading the investigation into several inmate assaults at the state penitentiary in Sioux Falls. The violence broke out Tuesday around 1 p.m. in parts of the Jameson Annex and is believed to be gang-related. Ten inmates were injured, five of them had stab wounds, and three were hospitalized. No prison staff were hurt. The AG says those responsible will be prosecuted to the fullest extent of the law. For more crime stories from MitchellNow.com, click here.