![FBI Warned about Lone Shooters at Concerts 9 Months Before Las Vegas Massacre](https://ticklethewire.com/wp-content/uploads/2017/09/police-line.jpg)
FBI Warned about Lone Shooters at Concerts 9 Months Before Las Vegas Massacre
More than nine months before the mass shooting at a Las Vegas country music festival earlier this week, the FBI and Homeland Security warned of the threat of lone gunmen carrying out massacres during large gatherings like music venues.