A woman chillingly proclaimed to concert-goers that "they were all going to die" shortly before the mass shooting at a Las Vegas country music concert killed 50.

Stephen Paddock of Mesquite, Nevada opened fire with automatic weapons Sunday at a Jason Aldean concert in Las Vegas from the nearby Mandalay Hotel, killing 50 and wounding over 500, in what is the largest mass shooting in United States history before he killed himself. SWAT officers found an assortment of weapons in his hotel room.

According to local Las Vegas media, a woman had warned concert-goers that something bad would happen to them 45 minutes before the shooting. "She had been messing with a lady in front of her and telling her she was going to die, that we were all going to die," said a witness.

"They escorted her out to make her stop messing around with all the other people, but none of us knew it was going to be serious.”

Las Vegas Police have announced that they are looking for a Marilou Danley in the investigation, who is described as an Asian woman and approximately 4 feet and 11 inches in height. However, Las Vegas Police do not believe there was another shooter. "Right now, we believe it's a sole actor, a lone-wolf-type actor," Las Vegas Metropolitan Police Sheriff Joseph Lombardo told CNN.