Flights have been grounded across the US due to an air traffic control "communication issue", Transport Secretary Sean Duffy says
US aviation officials earlier issued an order to ground all flights due to "extraordinary circumstances and for reasons of safety"
Duffy says the issue hit air traffic control centres and "FAA technicians are investigating the issue. We will provide immediate updates as we have them"
It's unclear how many flights are currently grounded
A passenger stuck on a plane at Los Angeles International Airport (LAX) says flights which have just landed are not being allowed to move from the tarmac to the gates.
The passenger, who has travelled from Newark, tells the BBC's US partner CBS News that they're unable to taxi to the gate as another plane scheduled to take off is not being allowed to depart.
Image source, Flightradar24Flight-tracking website Flightradar24 says 3,100 airborne aircraft are currently bound for US airports.
On X, it says that no additional aircraft are taking off at this time.
In its statement, the FAA said inbound international flights would be managed on a "case by case basis".
Transport Secretary Sean Duffy says the FAA "issued a nationwide ground stop for all US airports following a communication issue impacting all Air Route Traffic Control Centers.
"FAA technicians are investigating the issue. We will provide immediate updates as we have them," he says.
The Federal Aviation Administration (FAA) says all flights in the US are grounded "due to extraordinary circumstances and for reasons of safety".
The alert, which appeared on the FAA website, has since been removed - it's unclear how many flights are currently grounded.
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