FBI says Iran and Russia have US voter information

US national security officials have reported Iran was responsible for sending threatening emails to Democratic voters, reports BBC. 

The emails appeared to come from a far-right pro-Trump group and were meant to "incite unrest", National Intelligence Director John Ratcliffe said.

Mr Ratcliffe also said US officials found Iran and Russia have obtained "some voter registration information".

The announcement comes 13 days before the presidential election.

The unusual intelligence briefing this close to the vote is seen as a testament to the government's concerns over voting interference and disinformation campaigns from foreign actors.

Mr Ratcliffe said Iran's "spoof emails" claimed to be sent by the Proud Boys in order to "intimidate voters, incite unrest and damage" President Donald Trump.

He added that the voter data could be used in attempts to "communicate false information to registered voters that they hope will sow confusion chaos and undermine your confidence in American democracy".

Mr Ratcliffe said officials "have not seen the same actions from Russia", but are aware they have some voter information.

In many states, voter data is available upon request, though each state has different requirements on who can request voter information, what data is available and how this data might be used, according to the National Conference of State Legislatures.

"If you receive an intimidating or manipulative email in your inbox, don't be alarmed and do not spread it," Mr Ratcliffe said, calling the actions to influence US voters "desperate attempts by desperate adversaries".

FBI Director Christopher Wray joined Mr Ratcliffe at the news conference. He said that US election systems were still secure and "resilient".

"You should be confident that your vote counts," Mr Wray said. "Early, unverified claims to the contrary should be viewed with a healthy dose of scepticism."

The officials did not offer further details on how the voter data was obtained or what the Russians may be doing with the information.

US intelligence agencies concluded in 2016 that Kremlin-backed hackers were behind an effort to undermine Hillary Clinton's presidential run, using both cyber attacks and fake news stories planted on social media.

Iran has not managed to successfully hack US systems.

The emails in question were addressed to registered Democratic voters in several states, including the key battleground of Florida, and urged them to vote for Mr Trump - or else.

"You will vote for Trump on Election Day or we will come after you," the emails said, according to US media.

"Change your party affiliation to Republican to let us know you received our message and will comply."

As of Wednesday, over 40 million Americans have cast early votes in the presidential contest between Mr Trump and Democrat Joe Biden.