(Las Vegas Review-Journal) Las Vegas police are trying to coax a man who is harming himself down from a roof Monday night in the central valley. Officers responded about 9:05 p.m. to the 3600 block of Seneca Circle, near East Twain Avenue and South Maryland Parkway, Metropolitan Police Department Lt. David Gordon said. The man is on top of a roof cutting himself with a knife, and officers are trying to negotiate and get him to come down. Medical help is waiting nearby, and police implemented “modest evacuations” in the area. SWAT officers are responding. Contact Mike Shoro at [email protected] or 702-387-5290. Follow @mike_shoro on Twitter.