A gunman opened fire on a huge Vegas crowd watching a concert near the Mandalay Bay Casino in Las Vegas Sunday night.

The concert goers were watching Jason Aldean on stage when the gunfire started. Most of the crowd did not react right away, and even Aldean kept singing through the first burst of gunfire.

The shots were definitely from some sort of automatic weapon, and once everyone realized what was going on, the music stopped and everyone waited.

Police have reported that the shooter is dead, but they are looking for a woman that may have more information about the shooter.  ABC is reporting that the woman's name is Marilou Danley, may have already been located by police.

The videos of the attack are gutwrenching to watch, and I don't want to post more than the one above.  If you do want to watch videos of what happened on the final night of the Route 91 Festival, you can do so here.

This is another heartbreaking moment for most of us, as we watch another senseless crime. Our hearts are with the victims and their families today, as everyone tries to pick up the pieces and sort out exactly what just happened.

Jason Aldean took to Instagram to leave his fans a message after the shooting.