Clinton's campaign was also hacked in breach of Democratic Party
And the Justice Department is already investigating.
Democrats at the DNC were divided on last week's email hack
Sanders and Clinton supporters agree: Trump's comments were much worse.
Reuters: FBI is investigating another Democratic Party hack
The breach at the Democratic Congressional Campaign Committee may have been to get donor information.
Trump wants Russia to hack the US government (updated)
"Russia, if you're listening, I hope you're able to find the 30,000 emails that are missing."
FBI to investigate Russia's involvement in DNC email leak
The agency has also been monitoring recent attacks on other political organizations.
Wikileaks publishes thousands of DNC emails
The leak shows officials working against Sanders, and expose data on contributors.
The clownish fight over who hacked the DNC
How do you prove you're not a Russian spy?
DNC accuses Russian hackers of stealing opposition research
Everybody wants to know what's up with Trump.