U.S. President-elect Donald Trump speaks during a news conference in the lobby of Trump Tower in Manhattan, New York City, U.S., January 11, 2017. REUTERS/Lucas Jackson

(Reuters) - U.S. President-elect Donald Trump on Friday accused his political opponents, “both Democrats and Republicans,” for putting together a dossier of unverified claims linking him to Russia and said the document was probably released by intelligence agencies.

“Totally made up facts by sleazebag political operatives, both Democrats and Republicans - FAKE NEWS! Russia says nothing exists,” Trump said in a series of posts on Twitter.

“Probably released by ‘Intelligence’ even knowing there is no proof, and never will be,” he said.

On Wednesday, U.S. spy chief James Clapper said that media leaks of the material had not come from U.S. intelligence agencies and that the agencies had not judged whether the information was reliable.