A chartered aircraft carrying about 100 Americans from the U.S. airbase at Bagram, Afghanistan, has landed safely in Dubai after being diverted to Iran because of issues with its flight plan, the U.S. State Department said on Friday.

The Fly Dubai plane took off earlier from Bandar Abbas, Iran, after being rerouted there. A U.S. official said the plane had failed to update its flight plan after leaving Bagram for Dubai several hours late.

When Iranian civil aviation officials identified the plane, they could not find it in their system because it was supposed to have flown through hours earlier, the official said.

Iranian officials first asked it to turn around and then to land at Bandar Abbas when told it did not have enough fuel to return to Afghanistan, the official said.