MITCHELL, S.D. (MITCHELLNOW) Attorney General Marty Jackley says the Division of Criminal Investigation is looking into the death of a fourth inmate at the state penitentiary since February. The latest case involves 42-year-old Nicholas Skorka, who was found dead in his cell on Tuesday. According to a news release, an autopsy is scheduled, and Jackley says more details will be released once investigations are complete. For more crime stories from MitchellNow.com, click here.