Sunday's shooting in Las Vegas is regarded as the deadliest mass shooting in modern U.S. history. Authorities say dozens of people died and over 500 were injured.

The shooting rang out during a Jason Aldean performance at the Route 91 Harvest Festival on the Las Vegas Strip.

Officials identified the shooter as Stephen Paddock, 64. SWAT team members located Paddock, dead in his hotel room, authorities said.

Do you know anyone who was a victim of this attack? If so, we'd like to hear their story. Let us know in the comments or email Investigations Editor Chris Hepp at chepp@phillynews.com with information.