Shortly after 22:00 local time, lone gunmen, opened fire from a room on the 32nd floor of the Mandalay Bay Resort and Casino in Las Vegas, Nevada onto attendees at an outdoor country music concert held opposite to the hotel. At least 58 people were killed and 489 were wounded in the attack, which marked the deadliest mass shooting attack in the United State to date. The shooter, who was found dead from a self-inflicted gunshot in the room, was identified as 64-year-old retiree, Stephen Craig Paddock, from Mesquite, Nevada—located about 128Km /80 miles northeast of Las Vegas. Though the Islamic State claimed responsibility for the attack via its Amaq news agency, the FBI determined that there was no connection between the assailant and any terror groups, but the motive is still being investigated. During the incident, authorities halted operations at the city' McCarran International Airport, located near the Mandalay Bay Resort and Casino, which was reopened about five hours later. Police recovered 19 rifles from the hotel room--some of which were converted to fully automatic weapons—and additional 14 weapons from his apartment. Several pounds of ammonium nitrate, a fertilizer commonly used to ensemble made bombs, were found in his vehicle. The attack seemed to have been planned over a long period, as suggested by the stockpile of weapons and ammunition, room selection and the cameras’ Paddock placed inside and outside his hotel room to monitor the surroundings.