A Utah man has been arrested in connection with the shooting of a Los Angeles County sheriff’s deputy Monday night, and may have been involved in a killing less than an hour earlier in Los Angeles, officials said Tuesday. Rhett Nelson, 30, of St. George, Utah, was detained in Long Beach shortly after he called his father from a church and referred to “committing murder,” according to Los Angeles County Sheriff’s Department homicide Capt. Kent Wegener.