A technical fault in air traffic control, triggered by security measures for peace talks between the US and Iran in Switzerland, has caused disruptions at Zurich airport, aviation authorities say according to Reuters, adding the problem has been resolved.

The glitch occurred following the integration of a restricted zone over Buergenstock, the Swiss mountain resort where negotiations are taking place, into radar display systems, Swiss air traffic control authority Skyguide said.

The zone was only decided at the last minute because the decision to hold the latest round of talks was not finalised until Saturday, according to a statement.

By midday, 12 arrivals and 14 departures had been cancelled, an airport spokesperson told Reuters. At least 60 departures were delayed, she added.

Operations have since returned to normal, Skyguide said, adding: “The systems are running smoothly, and security was ensured at all times.”