From September 17, Stephen Paddock stayed at The Ogden in Downtown Las Vegas, which overlooked the open-air Life is Beautiful festival that ran from September 22 to 24.

Stephen Paddock arrived at Mandalay Bay and booked into Room 32–135, a complimentary room on the 32nd floor.

From September 29 to October 1, the Route 91 Harvest country music festival took place at the Las Vegas Village, with over 22,000 attendees on the final day.

Stephen Paddock checked into the directly connected Room 32–134 at Mandalay Bay, four days after checking into Room 32-135.

A mass shooting occurred when Stephen Paddock opened fire on the crowd attending the Route 91 Harvest music festival from his suites in the Mandalay Bay hotel. He killed 60 people and wounded at least 413 others. Paddock was found dead in his room from a self-inflicted gunshot wound about an hour later.

Airfield operations at McCarran Airport resumed after being shut down for several hours due to the mass shooting.

A state of emergency was declared in Clark County following the mass shooting.

President Donald Trump visited the shooting victims and first responders in Las Vegas.

A unity prayer walk and ceremony was held in Las Vegas in honor of the dead, with speakers including Vice President Mike Pence and Las Vegas Mayor Carolyn Goodman.

The Vegas Golden Knights of the NHL held a tribute to the victims and honored response personnel before their inaugural home game. The number 58 was retired in honor of the 58 people who died immediately or within days of the shooting.

Thousands participated in a commemorative three-mile walk between Circus Circus and Mandalay Bay.

A lawsuit was filed on behalf of 450 of the victims of the shooting, claiming that the Mandalay Bay Hotel had shown negligence.

Massachusetts became the first state to ban the sale, possession, or use of bump stocks.

The annual Rock 'n' Roll Las Vegas Marathon took place with a massive amount of security.

The Las Vegas Metropolitan Police Department released a preliminary report on the event.

Douglas Haig, an Arizona ammunition dealer, was charged in a Nevada federal court with "conspiracy to manufacture and sell armor-piercing ammunition without a license" after his fingerprints were discovered on unfired armor-piercing ammunition inside Paddock's suite.

Clark County Sheriff Joe Lombardo held a press conference on the release of the LVMPD Criminal Investigative Report of the October 1 Mass Casualty Shooting. The investigation revealed no evidence of conspiracy or a second gunman, and that the gunman's motive had not been definitely determined.

A mass shooting at the Borderline Bar and Grill in Thousand Oaks, California, left thirteen dead, including the gunman. Several people who were at the scene of the Las Vegas shooting were also present.

Acting United States Attorney General Matthew Whitaker signed a regulation banning bump stocks in the U.S., effective March 2019. The regulation banned new sales and required current owners to surrender or destroy existing bump stocks.

A report published by the FBI's Behavioral Analysis Unit stated that "there was no single or clear motivating factor" for the shooting.

Las Vegas police officer Cordell Hendrex, who did not immediately respond to the gunfire, was fired for his inaction.

The future of the Las Vegas Village remained undetermined until September 2019. MGM Resorts International had announced that they intended to create a community center, which would host sporting events.

MGM Resorts International reached a settlement of $800 million with the victims of the shooting.

Douglas Haig was sentenced to 13 months in prison.

MGM Resorts reached a settlement of $800 million with the victims of the shooting, which was approved by a judge.

The Las Vegas Metropolitan Police Department included two more women in the official death toll, increasing the number of deaths to 60.

MGM Resorts donated 2 acres of the land for a permanent memorial to the victims and survivors and sold the remaining 13 acres to Three Affiliated Tribes for an undisclosed sum.

The Supreme Court overturned the ban on bump stocks for lacking a legislative basis.