The Islamic Republic of Iran, the world’s leading state sponsor of terrorism, has reportedly hacked Republican presidential nominee Donald Trump’s campaign.

Politico began receiving internal campaign documents from the campaign late last month from an anonymous AOL email account that used the name “Robert.”

The emails contained internal communications from a top Trump campaign official that included research the campaign did on Sen. JD Vance (R-OH) and “potential vulnerabilities” that he may have. The research dossier was a preliminary version of the file that the campaign used to vet Vance, something that is standard practice in presidential campaigns.

When the publication asked the anonymous account how they received the documents, they responded: “I suggest you don’t be curious about where I got them from. Any answer to this question, will compromise me and also legally restricts you from publishing them.”