Gatwick Airport has briefly suspended all flights after two unmanned aerial vehicles were spotted over the airfield.
The two drones were spotted near the runway on Wednesday, prompting the UK's second busiest airport to suspend all flights while authorities investigate the intrusion, according to The Guardian.
"Our focus is now on working, with the airport community, to catch up on the flight schedule", the airport spokesman said.
Some passengers at Gatwick have reportedly had to wait for more than two hours because of the suspension.
The airport has issued a warning, suggesting that people departing or picking someone up from Gatwick check the status of their flights.
According to the airport's Twitter account, as of the time of publication, the airport remained closed.