The user warned people to 'stay away' from Las Vegas due to a coming deadly attack. The ominous warning was left on the anonymous message boards on the 16th anniversary of the 9/11 attacks.

In keeping with this pattern, conspiracy-minded web sites Neon Nettle and posted identical stories claiming that an anonymous 4chan user predicted the Las Vegas Strip massacre three weeks before it occurred. The attacker had modified a semi-automatic firearm so that it fired like an automatic, and for roughly ten minutes he sprayed the concert crowd with bullets, killing 58 people and wounding hundreds.Īs with many mass casualty incidents in recent history, conspiracy theorists immediately pounced, claiming without proof, for example, that there was a second gunman on the fourth floor of the hotel or that internet sleuths had spotted footage of the shooter at an anti-Trump rally.

Police say a 64-year-old gunman opened fire from the 32nd floor of the Mandalay Bay Resort and Casino on a crowd of 22,000 people gathered below for the Route 91 Harvest Festival at 10:05 p.m. In early October 2017, a rumor surfaced online alleging that a person using only the name 'john' on the messaging board 4chan had 'predicted' the mass shooting in Las Vegas on 1 October 2017.