Rep. Maxine Waters (D-Calif.) on Thursday claimed without evidence that some of the allegations against President Trump contained in a controversial spy dossier are true.

“We already know that the coverage that they have on him with sex actions is supposed to be true,” Waters told MSNBC’s Ali Velshi. “They have said that that’s absolutely true.”

Waters did not say where she had gotten that information.

None of the most salacious allegations in the dossier have been verified, though CNN has reported that investigators were able to corroborate some aspects of it.

In a phone call with The Hill after the MSNBC interview, Waters clarified her remarks, saying that she believed there was enough information in the dossier to warrant a serious probe by the House.

“I said over and over again that the investigation needs to be done,” Waters said. “We are looking forward to House investigation where we can drill down on this stuff.”

The dossier, which has circulated among politicians and journalists in Washington for months, alleges that the Russians have long collected compromising information on Trump. The 35-page document made headlines in January, amid reports that both Trump and former President Obama were briefed on an addendum to the dossier.

The report is said to be the work of former British intelligence officer Christopher Steele, who was hired by anti-Trump Republicans last year to compile opposition research. Steele was eventually hired to continue his work by Democrats.

The Washington Post reported last month that the FBI had agreed to pay Steele to continue his research after the November election, but the deal eventually fell through and no payment was made.

In spite of that, none of the allegations in the report have been corroborated, and the White House has fiercely denied the accusations as "fake news."

The California congresswoman said that she believed an investigation into the explosive document would yield enough evidence to impeach Trump.

“I think that if we do the investigations, that we will find the connections and I do think that impeachment will be necessary,” she said.

It’s not the first time Waters has discussed the notion of impeaching Trump. She tweeted last month that her “greatest desire” was to lead the president “right into impeachment,” before clarifying that she meant that Trump’s own actions appeared to be leading in that direction.

Waters has been a fervent critic of Trump since before he took office. She joined dozens of fellow Democrats in boycotting the president’s Jan. 20 inauguration, and — along with Rep. Al GreenAl GreenCongressional Black Caucus calls on Trump administration to invest in prosecuting hate crimes Scalise ally, a Dem, leads fight to boost lawmaker security Dem leaders: Cool it on impeachment MORE (D-Texas) — willingly skipped Trump’s address to a joint session of Congress last week.