The slain gunman police described as the "sole aggressor" in the mass shooting at a Las Vegas concert was identified as Stephen Craig Paddock, 64, of nearby Mesquite.
Paddock opened fire from the 32nd floor of the Mandalay Bay Resort and Casino, killing at least 50 and wounding hundreds around 10:15 p.m. during a performance by Jason Aldean at the Route 91 Harvest Festival, authorities said.
Meanwhile police had located his companion, Marilou Danley, "a person of interest," and do not believe she was involved, according to reports.
Authorities said they didn't know what had motivated the shooter.
Eyewitnesses said the gunman fired continuous bursts of automatic gunfire onto the crowd, then paused for 10 to 15 seconds and began shooting again.
Mesquite police assisted Vegas cops in securing the suspect's home and assisting in the search, a Mesquite PD spokesman told HuffPost.