'The US Congress has released a memo accusing the FBI of abusing its power in its investigations into Donald Trump's presidential campaign.
The memo, written by Republicans, alleges the FBI used unsubstantiated evidence to spy on a Trump aide.
The FBI had warned against the memo's release and said key facts had been omitted.
Democrats said it was aimed at derailing ongoing investigations into the Trump campaign's links with Russia.
The memo has become a flashpoint in the bitter dispute between Republicans and Democrats over investigations into whether Russia colluded with the Trump campaign in the 2016 election.
What's in the memo?
It centres around court-approved wiretapping of Carter Page, a foreign policy adviser to the Trump campaign who was put under electronic surveillance by the FBI.
But the memo accuses the FBI and the justice department of using an unsubstantiated and Democratic-funded report to obtain the October 2016 warrant that gave permission to spy on Mr Page.'
Read More: Trump-Russia: Republican memo accuses FBI of abusing power