Arrivals at Newark Liberty International Airport in Newark, N.J., were temporarily halted early Tuesday evening due to drone activity above another airport in the area.
NBC reported that two drones were spotted some 3,500 feet above Teterboro Airport, located less than 30 kilometres from Newark Liberty.
Some flights were grounded at their departure locations to reduce the backlog of incoming flights, ABC reported.
Normal operations resumed at the airport at around 7 p.m. ET, airport authorities said.
READ MORE: Flights resume at London’s Heathrow airport after drone sighting
Earlier, the Federal Aviation Authority said a “traffic management program” was in effect for the airport, causing arriving flights to be delayed by an average of 55 minutes.
The incident came on the heels of disruptions at London’s Heathrow and Gatwick airports in the last month due to drone sightings.
Both airports responded by ordering military-grade anti-drone technology.
WATCH: Why drone threats crippled Gatwick Airport in the U.K.
It also comes just over a week after the U.S. Department of Transportation announced new rules and a pilot project to explore how to safely integrate drones into the airspace and prevent them from posing a threat to aircraft and hampering airport activity.
The Trump administration noted there are nearly 1.3 million registered drones in the United States and more than 116,000 registered drone operators, but officials say there are hundreds of thousands of additional drones that are not registered.
— With a file from Reuters
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