Russia's foreign ministry spokesman has denied reports that President Trump revealed classified information to senior officials during the Russian minister's visit to the Oval Office last week.

The Washington Post reported on Monday that the revelation put a source of intelligence on the Islamic State at risk.

Maria Zakharova, spokeswoman for the Russian foreign ministry, on Facebook on Tuesday described the reports as "yet another fake."

The reports came several days after the White House faced criticism for a possible security breach after it allowed a Russian news service photographer into the Oval Office to snap photos of Trump with Russian Foreign Minister Sergey Lavrov and Russian Ambassador Sergei Kislyak last week.