A government ethics watchdog group has filed a complaint against Rep. Devin Nunes Devin Gerald NunesSunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Sunday shows preview: With less than two months to go, race for the White House heats up Sunday shows preview: Republicans gear up for national convention, USPS debate continues in Washington MORE (R-Calif.) after a report revealed that a House Intelligence Committee Republican leaked Sen. Mark Warner Mark Robert WarnerIntelligence chief says Congress will get some in-person election security briefings Overnight Defense: Trump hosts Israel, UAE, Bahrain for historic signing l Air Force reveals it secretly built and flew new fighter jet l Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' House approves bill to secure internet-connected federal devices against cyber threats MORE’s (D-Va.) text messages to Fox News.

The liberal watchdog group Campaign for Accountability announced Thursday it amended a previous complaint filed with the Office of Congressional Ethics (OCE) against Nunes and called on OCE to investigate the Intelligence chairman for “leaking information provided to the committee during the course of an official investigation.”

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“Time and time again, Rep. Nunes and his staff leak confidential information without consequence,” the group’s executive director, Daniel Stevens, said in a statement. “What will it take for the House to step in and stop this clear abuse of authority?”

The group has previously filed complaints with OCE, including a similar complaint last month accusing Nunes of leaking information about Fusion GPS, the research firm tied to the controversial dossier connecting President Trump Donald John TrumpBiden leads Trump by 36 points nationally among Latinos: poll Trump dismisses climate change role in fires, says Newsom needs to manage forest better Jimmy Kimmel hits Trump for rallies while hosting Emmy Awards MORE to Russia.

The complaint follows a report in The New York Times citing congressional officials who say the Senate Intelligence Committee determined that a Republican on the House panel leaked messages to Fox News that were sent by Warner.

Last month, Fox News published a series of texts between Warner and lobbyist Adam Waldman, whose firm reportedly has ties to former Democratic presidential nominee 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.

Warner was seeking to establish contact with Christopher Steele, the author of the controversial Trump-Russia dossier, as part of the Senate panel's investigation into Russian interference in the 2016 election, and exchanged texts with Waldman about making contact with the ex-spy.

At the time, Fox News reported the texts were obtained from “a Republican source.”

The Times reported the two leaders of the Senate intel committee - Warner and Chairman Sen. Richard Burr Richard Mauze BurrRep. Mark Walker says he's been contacted about Liberty University vacancy Overnight Defense: Trump rejects major cut to military health care | Senate report says Trump campaign's Russia contacts posed 'grave' threat Senate report describes closer ties between 2016 Trump campaign, Russia MORE (R-S.C.) - determined the leak originated with Republicans on the House Intelligence Committee, and the two men briefed members of the Senate committee on their findings.

A lawyer for Waldman also came to the conclusion that the House committee leaked the messages and complained to Nunes about the leak, according to the Times.

A spokesman for Nunes did not deny that the committee had leaked the messages in a statement to the Times, but called the report “absurd.”

Burr later denied the Times report, telling a CNN reporter that his committee had not concluded that House Republicans were behind the leak.