DENVER (AP) — Colorado authorities were contacted with concerns about the mental health of Matthew Riehl over a month before he shot and killed a deputy and wounded four others. But the 37-year-old man was never held for a mental health evaluation. Authorities say Riehl fired more than 100 rounds in his suburban Denver apartment before he was killed by a SWAT team on Sunday. Wyoming College of Law students had been warned about Riehl, a former student, because of social media posts critical of professors at the school in Laramie, reported KTWO-AM in Casper, Wyoming. A Nov.