TEHRAN, Iran (AP) — Iranian media reported on Wednesday that the country’s paramilitary Revolutionary Guard has accused the deputy ambassador of the United Kingdom and other foreigners in the country of “espionage” and taking soil samples from prohibited military zones.

It was not immediately clear if the diplomat and other foreigners were detained.

The news outlets said the deputy head of mission at the British Embassy, Giles Whitaker, and other foreigners faced “spying” charges after visiting various forbidden areas in the country while the Guard was carrying out ballistic missile tests.

There was no immediate comment from the U.K. Foreign Office.