President Obama on Saturday told a reporter to not even bother asking a question about the FBI's investigation into Hillary Clinton Hillary Diane Rodham ClintonBiden leads Trump by 36 points nationally among Latinos: poll Democratic super PAC to hit Trump in battleground states over coronavirus deaths Battle lines drawn on precedent in Supreme Court fight MORE's email server.

The president said he would continue to decline to comment on the investigation, as he has done for months.

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"I'm going to continue to be scrupulous about not commenting on it just because I think [FBI] Director [James] Comey could not have been more exhaustive," Obama said, cutting off the question of a reporter during a press conference in Warsaw, Poland, at a NATO summit.

"My understanding is that not only did he make a full presentation, but while we were over here, or at least flying, he was presenting to Congress for hours on end," Obama said.

Comey announced Tuesday that the FBI would not recommend charges against Clinton over the private email server that she used while she was secretary of State.

He defended his agency against Republican criticism Thursday at a hearing of the House Oversight Committee.