A man was arrested late Monday night â and later released â in connection with allegedly stabbing a man on the playground at Kearns Elementary School, Unified police say. The victim, whom police say is in his mid-40s, allegedly attempted to intervene in an argument between the suspect and the suspectâs girlfriend Monday morning, said Unified Police Detective Ken Hansen. The suspect, who is in his mid-30s â threw a large knife at the victimâs back, Hansen said, which made a long slice but didnât ... <iframe src="http://www.sltrib.com/csp/mediapool/sites/sltrib/pages/garss.csp" height="1" width="1" > </frame>