The Hamburg Airport in Germany canceled all flights on Saturday night as the authorities responded to a man who is believed to be armed and who drove his vehicle onto the tarmac and parked near a plane.
The man fired at least one shot into the air, Sandra Levgrün, a spokeswoman for the Hamburg Police Department, said in an interview posted on social media.
No injuries have been reported so far, Ms. Levgrün said.
The driver is accompanied by a child passenger, and the police said they were trying to contact him.
Passengers aboard the plane near the vehicle were evacuated, the police said.
A spokeswoman for the airport, Katja Bromm, said in an email that the police responded to the airport at 8:24 p.m. local time, prompting it to halt takeoffs and landings.
Twenty-seven flights have since been canceled, she added, affecting roughly 3,200 passengers.