The FBI found evidence that Iranian hackers stole materials from the Trump campaign this summer and provided them to the Biden or Harris campaigns, ChainCatcher reported.

The emails were sent to "individuals associated with the Biden campaign" in June and July, when Biden was still the Democratic nominee.

The FBI discovered the "unsolicited" evidence as part of its investigation into election interference. The government statement noted that the emails "contained as email text excerpts from non-public material stolen from former President Trump's campaign."

The Harris campaign issued a statement saying they were "victims" of a hacker attack.