Sources: Vegas killer paid cash for property and privacy

Mesquite, Nevada (CNN)He seemed so ordinary, just another house-hunting retiree, when he strolled with his girlfriend into the sales office of the Sun City development in late 2014. The agents had just what Stephen Craig Paddock was looking for — a 2,000-square-foot, two-bedroom stucco rambler on a cul-de-sac.

Curt Devine, Drew Griffin, Scott Bronstein, John Couwels, Kyung Lah, Bob Ortega and Ashley Fantz contributed to this story.