Swiss intelligence officers are being criticised for ignoring warnings from their US and UK counterparts about the owners of a hotel near the military airbase in Meiringen in canton Bern.
Last summer the hotel was raided and the Chinese owners arrested. They were suspected of spying on the airbase which is due to receive new F-35 fighter jets.
The planes have been a target of Chinese espionage attempts all over the world.
But a report in the Wall Street Journal says the Swiss had been warned about the owners by the CIA and MI6. But those warnings were ignored for a long time.
The newspaper also reports the hotel, which is now up for sale, will be bought by the Defence Department – but that’s not being confirmed.
G7 Summit in Évian - Everything you need to know
Geneva braces for G7 with 4,000 soldiers as protest standoff deepens
Zelensky proposes Switzerland as venue for Putin meeting
Geneva family fights to recover dead son's brain
Airport queues lengthen at Geneva and Zurich under new EU border checks
Ticino votes on Switzerland's first compulsory dental insurance
