An uninvited drone crashed into the vacant stands during play at the US Open in New York City on Thursday.
The drone entered the Louis Armstrong Stadium during a ladies singles match between Flavia Pennetta and Monica Niculescu. The drone crashed into a vacant area in the stands and no-one was hurt.
"A little bit scary, I have to say," Pennetta told ESPN.
"With everything going on in the world…I thought, 'OK, it's over.' That's how things happen."
"The chair umpire just wanted to wait for an OK from the police to be able to continue. Even if, truthfully, I don’t think even they knew what it was."
"If there had been spectators, it would have hit them and done a lot of damage."
Police eventually gave the all clear and the match continued, with Pennetta winning in straight sets.
Following an investigation, police tracked down Daniel Verley as the pilot of the drone. The 26-year-old teacher has been charged with "reckless endangerment, reckless operation of a drone and operating a drone outside the prescribed area."