Lawyer Michael Avenatti on Wednesday hit back at President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE after the president accused him of making "false accusations" against Supreme Court nominee Brett Kavanaugh.

"'False accusations?'" Avenatti tweeted in response to Trump's remarks earlier in the day. "Like those crimes your fixer [Michael] Cohen pled to? You are an habitual liar and complete narcissist who also is a disgrace as a president and an embarrassment to our nation."

“False accusations?” Like those crimes your fixer Cohen pled to? You are an habitual liar and complete narcissist who also is a disgrace as a president and an embarrassment to our nation. You are so inept that your “best and brightest” are Cohen and Giuliani. Let’s go. — Michael Avenatti (@MichaelAvenatti) September 26, 2018

The White House did not immediately respond to a request for comment.

Avenatti's client, Julie Swetnick, went public on Wednesday with explosive accusations against Kavanaugh, claiming he was present when she was drugged and raped by a group of men at a high school party in the early 1980s.

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Swetnick, in a statement released by Avenatti, accused Kavanaugh of engaging in a pattern of "abusive and physically aggressive behavior" towards girls, including grinding on and touching them without consent.

Kavanaugh denied Swetnick's accusations, calling them "from the Twilight Zone" and saying he doesn't know her. He has consistently denied sexual misconduct accusations from two other women — Christine Blasey Ford and Deborah Ramirez — regarding incidents that allegedly occurred during the early 1980s.

Trump in response to Avenatti publicizing Swetnick's claims blasted the lawyer as a "low-life" and "third rate."

"Avenatti is a third rate lawyer who is good at making false accusations, like he did on me and like he is now doing on Judge Brett Kavanaugh," Trump tweeted.

Avenatti, who's mulling a potential 2020 presidential bid, also represents adult-film star Stormy Daniels in her lawsuit against Trump and his former lawyer, Michael Cohen.

Cohen last month pleaded guilty to charges of bank fraud, tax fraud and campaign finance law violations. In court, he said that he paid off two women shortly before the 2016 election to stay quiet about their alleged affairs with Trump. Cohen implicated Trump in those crimes.

Avenatti is calling for an FBI investigation into the allegations made by Swetnick.