The FBI announced it seized more than 700 illegal drones and detected almost 1,600 around the 11 stadiums in the United States during the World Cup.
Security forces established "no-drone zones" of a three nautical-mile radius and 3,000 feet above ground level around stadiums. Andrew Giuliani, Executive Director for the White House World Cup task force, stated that "drones getting above players or fans" is "an emerging threat" that organisers had prepared for long in advance.
He noted that some violators may have simply been "putting it up to go and take a look at the tailgate... but that obviously takes resources away in case there are potentially evildoers that are doing that."