An inmate at the state prison in Oak Park Heights is charged with first-degree assault for slashing the face, scalp and hand of a corrections officer in late June, saying he was angry at the officer and wanted to permanently scar him. Authorities say 28-year-old Joshua Smith used a toothless comb with a razor blade attached. Smith is serving time for aiding and abetting the 2013 murder of a man from Foley.