WASHINGTON, April 25 (Reuters) - U.S. President Donald Trump on Thursday said he had never ordered his White House counsel at the time, Donald McGahn, to fire Special Counsel Robert Mueller, as described in the report Mueller wrote about the investigation into Russian meddling in the 2016 U.S. election and whether the Trump campaign colluded with Russia.

"As has been incorrectly reported by the Fake News Media, I never told then White House Counsel Don McGahn to fire Robert Mueller, even though I had the legal right to do so. If I wanted to fire Mueller, I didn't need McGahn to do it, I could have done it myself," Trump wrote on Twitter.

The Democratic chairman of the House judiciary panel has issued a subpoena for McGahn to testify and provide documents to the committee, but it is not clear whether the White House will comply. Trump has vowed to fight every subpoena from House Democrats probing his administration. (Reporting by Makini Brice Editing by Chizu Nomiyama)