LAS VEGAS _ Police said Sunday they are investigating reports of a possible active shooter at the Mandalay Bay resort and casino on the Las Vegas Strip.
"We're investigating reports of an active shooter near/around Mandalay Bay Casino. Asking everyone to please avoid the area," the Las Vegas Metropolitan Police said on Twitter.
Concertgoers at a Route 91 Harvest country music festival performance reported a burst of weapons fire as the concert was underway. The shots appeared to be coming from an upper floor of the hotel, some witnesses said.
Video posted on social media showed a country artist mid-song when gunshots rang out in rapid succession. It went on about 10 seconds before the music stopped. The crowd appeared slow to move at first.
"Get down, stay down," a woman shouted moments later. "Let's go," another voice said. Another wave of gunshots followed soon after.
A triage center was being set up at Las Vegas Boulevard and Tropicana Avenue, and multiple emergency vehicles were en route to the scene.
University Medical Center spokeswoman Danita Cohen told The Associated Press that the hospital is taking in "several" people with gunshot wounds.
