When Chancey Smith began loading ammunition into several firearms and talking about a murder-suicide, a friend dialed 911 to warn police that he intended to kill his ex-girlfriend. But despite the man’s call to a Lexington County (SC) 911 dispatcher, Smith finished readying his weapons and drove several miles to his ex-girlfriend’s house, where he shot and killed her, her 9 and 6 year-old children, and then himself. The 911 caller knew Peake’s name, but not her address, so deputies tried to intercept him before he left home or on the way. At one point a deputy passed the suspect going the opposite direction, but didn’t realize it. Now sheriff’s officials are piecing together the timeline of the incident to determine what happened between the 9:54 p.m. 911 call and the 10:11 p.m. arrival of deputies at Amanda Peake’s house. Read more about the incident and listen to the 911 call here.