Authorities are learning more about the man who killed Emily Keyes, and sexually assaulted some hostages.
They know his name: Duane Morrison. He was 53 and lived in Denver.
One of the last faces Emily Keyes ever saw was Morrison’s.
A stranger to her, and the community he senselessly shattered.
"we want to find out why this guy was here, why his motive was here why he singled out and targeted this school," said Joe Morales, of the Colorado Department of Public Safety.
Authorities are questioning his family and looking for anyone who may have known him. What little they know already indicates there won't be many.
"Some of the information coming in from his family suggests he was just a by-himself kind of guy," Morales said.
He lived alone, at a Denver apartment complex.
Residents have a few vivid memories of their quiet neighbor.
"One time I saw him with a gun. I thought he was a police officer and I told my husband he has a gun out, he must be a police officer," said Christine Archita.
Not a police officer, but familiar with guns.
"When we had came here they had said he's really quiet and they said they had seen him pointing rifles outside his windows. But he never bothered anyone around here," said Rudy Maldonado.
Investigators believe he lived out of his jeep in his final days, spending time along the highway 285 corridor, camping out near Bailey, staying some nights in a nearby hotel.
Morrison has a criminal past, mostly drug infractions and interfering with police officers. But nothing to suggest he would be the stranger responsible for one of the worst days ever in a small mountain town.