Igor Danchenko, a main source for the details of the debunked "Steele dossier" of accusations created by Democrats against Donald Trump while he was candidate for president, and used even after he held office, was a paid FBI informant, according to new documentation, prompting fresh outrage from Trump.

Danchenko is facing a trial on five counts of lying to the FBI during that relationship, and the court case is scheduled to be in federal court in a few weeks.

But there are appearing new details about the situation in which he apparently fed faked information to former British agent Christopher Steele, who compiled it into a dossier which then was used against President Trump.