A Norwegian man who worked as a security guard at the U.S. Embassy in Oslo has been arrested for allegedly spying for Russia and Iran. The authorities in Norway have accused him of passing on sensitive information to these countries,

A Norwegian man working as a security guard for the US Embassy in Oslo was arrested this week on allegations of spying for Russia and Iran.

The man, who is in his 20s, was arrested while in his garage on Wednesday, according to the Norwegian Police Security Service. On Thursday, a court decided the man could be detained for four weeks, with the first week in isolation, while investigators look into the allegations, according to Reuters.

The Norwegian man was arrested this week in Oslo and ordered jailed pending further investigation in what the authorities called a ‘very serious case.’