A document released by Wikileaks Wednesday says that the U.S. has been using its embassy in Turkey to gather intelligence on Iran. According to the cable released from the U.S. embassy in Turkey, the information was gathered through Iranian citizens living in Turkey.

The Iranians who were contacted by the Americans were threatened by Iranian agents not to have contact with American diplomats, the cable said, and the information was gathered in clandestine ways to ensure their safety.