STORY: The FBI said Monday it was investigating claims by Donald Trump's presidential campaign that it was hacked by Iran.
The former president said on Saturday that Microsoft had informed his campaign that Iran had hacked one of its websites.
Trump said Iran was "only able to get publicly available information."
His campaign has pointed to a report on Friday by Microsoft researchers indicating that Iranian government-linked hackers tried breaking into the account of a "high-ranking official" on a US presidential campaign in June.
The report added that the hackers took over an account belonging to a former political adviser and then used it to target the official.
It did not give further details as to the targets' identities.
The Washington Post also reported on Monday that the FBI was investigating an alleged hack targeting advisers to the campaign of President Joe Biden and Vice President Kamala Harris.
The newspaper, citing sources, said the FBI began the investigation in June, and suspected that Iran was behind the attempts to steal data.
The Harris campaign did not immediately respond to a request for comment.
Harris became the Democratic presidential nominee after Biden withdrew his bid last month.
The Iranian government has denied that it hacked the Trump campaign.
