FRANKFURT (Reuters) - A Lufthansa Airbus A340-300 was heavily damaged and 10 people were sent to a clinic to check for potential respiratory issues after a towing truck caught fire at Frankfurt airport, the German airline said on Monday.

The 10 people include ground crew and fire brigade staff involved in putting out the blaze.

The fire occurred while the truck was repositioning the aircraft, which had no passengers or crew on board at the time, Lufthansa said in a statement.

“The aircraft is heavily damaged,” Lufthansa said, adding that it was due to be used on flight LH426 to Philadelphia on Monday.