The special master reviewing the items seized from former Trump personal attorney Michael Cohen said Monday that she has provided 12 audio recordings to federal prosecutors for their investigation.

"Based upon those de-designations, the special master released the 12 items to the government that day," Special Master Barbara Jones said in a filing in U.S. District Court in Manhattan, CNN reports.

FBI agents seized documents, cellular telephones and other devices in a raid of Cohen's home, office, and hotel room in April.

They acted on search warrants that were based in part on information obtained by Russia special counsel Robert Mueller's investigators.

Rudy Giuliani, the former New York City major who is now on President Donald Trump's personal legal team, confirmed Cohen had secretly recorded a conversation with Trump two months before the 2016 election.

They discussed a payment to former Playboy model Karen McDougal, who has alleged she had an affair with Trump — though Giuliani said Trump did not know he was being recorded.

"Nothing in that conversation suggests that he had any knowledge of it in advance," he told The New York Times, which originally disclosed the recording Friday.

The White House has consistently said Trump denied the affair.