Officials at London's Heathrow Airport say flights are being allowed to take off again after departures were suspended due to a reported drone sighting.
The rozzers are supposedly investigating the drone appearance, but there's no word on when flights will be back up and running.or should that be flying.
Police officers were among witnesses who saw a drone at Heathrow Airport and the military has been brought in to provide assistance, Metropolitan Police Commander Stuart Cundy said.
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With travelers and United Kingdom authorities still reeling from the incident a few weeks ago involving drones spotted deliberately flying close to Gatwick airport, the country's second busiest, travelers find themselves stranded and planes grounded in part of the United Kingdom due to a drone sighting.
It is illegal in the United Kingdom to fly a drone within 1km of an airport or airfield boundary.
One tweeted: "We've been sitting on the runway at Heathrow for like an hour and a half".
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Last month, London's second-busiest airport, Gatwick, was severely disrupted when drones were sighted over three days, forcing the cancellation of around 1,000 flights.
Mr Grayling said: "We are in contact with Heathrow Airport concerning the drone sighting".
Arriving planes are continuing to land at Heathrow.
Gatwick closed on the evening of December 19 and for much of the day on both December 20 and 21.
The anti-drone equipment can detect and jam communications between a drone and its operator and was deployed on a roof at Gatwick.
The person or persons responsible for the Gatwick drones have not been located and no group has claimed responsibility.
The exclusion zone around airports will be extended to approximately a 5km-radius (3.1 miles), with additional extensions from runway ends.
Police could also fine drone users failing to comply with authorities or present registration to operate a drone up to £100.