The comedian Tom Arnold says he's teaming up with President Donald Trump's longtime lawyer, Michael Cohen, to take down the president.

Arnold tweeted a photo with Cohen on Thursday night; Cohen retweeted it.

The two met up at the Loews Regency Hotel in Manhattan.

The comedian Tom Arnold said he was teaming up with President Donald Trump's longtime lawyer, Michael Cohen, to take down the president in what appeared to be another in a line of signals that Cohen has sent to Trump in recent days.

Arnold is working on a Vice show called "The Hunt for the Trump Tapes." It features Arnold hunting for unsavory recordings of the president. The idea for the show was sparked by the release of the infamous "Access Hollywood" tape before the presidential election, on which Trump was heard boasting of groping women.

The comedian told NBC News on Friday that Cohen — who's under criminal investigation in the Southern District of New York on suspicion of campaign-finance violations, bank fraud, wire fraud, illegal lobbying, and more — spoke with him for the show, which is expected to air later this year.

"We've been on the other side of the table, and now we're on the same side," Arnold told NBC News. "It's on! I hope he sees the picture of me and Michael Cohen and it haunts his dreams."

Arnold tweeted a photo, which Cohen retweeted, that was captioned "I love New York."

Cohen declined to comment to NBC News. But he did tweet about his encounter with Arnold on Friday night, denying that he discussed Trump with the comedian.

"Appreciate @TomArnold kind words about me as a great father, husband and friend," Cohen wrote. "This was a chance, public encounter in the hotel lobby where he asked for a selfie. Not spending the weekend together, did not discuss being on his show nor did we discuss @POTUS. #done #ridiculous"

Arnold told NBC News earlier that he met with Cohen at the Loews Regency Hotel in Manhattan. He did not say whether Cohen planned to give him tapes of conversations with Trump. In a Friday night interview with CNN, Arnold claimed that he and Cohen would be spending the weekend together.

"This dude has all the tapes — this dude has everything," Arnold told NBC News. "I say to Michael: 'Guess what? We're taking Trump down together,' and he's so tired he's like, 'OK,' and his wife is like, 'OK, f--- Trump.'"

Arnold, whose ex-wife is the outspoken Trump supporter Roseanne Barr, said Cohen was being betrayed by the president.

"Michael Cohen showed up and worked diligently above and beyond and sacrificed, and Donald Trump is like, 'I don't even know who he is,'" Arnold said. "You think Michael doesn't notice that?"

Arnold then tweeted Friday afternoon in response to the NBC News story once it went viral.

"Michael Cohen didn’t say Me & him were teaming up to take down Donald Trump!" Arnold tweeted. "Michael has enough Trump on his plate. I’m the crazy person who said Me & Michael Cohen were teaming up to take down Trump of course. I meant it. Michael doesn’t get paid by Vice."

Cohen responded: "Thank you Tom for correcting the record."

'If they want information on Trump, he's willing to give it'

The incident seems to be just the latest in a whirlwind week of signals from Cohen and his associates to Trump.

On Tuesday, Cohen hired Guy Petrillo as the latest lawyer representing him in the criminal investigation. Petrillo, a partner at Petrillo Klein & Boxer, has extensive experience in the district. Experts told Business Insider that Petrillo was the kind of attorney you would hire if you were looking to cut a deal in such a case.

Later that day, The Wall Street Journal reported that Cohen had frequently told his friends in recent months that he was frustrated Trump hadn't offered to pay his legal bills. Those fees are "bankrupting" Cohen, the report said, and Cohen apparently believes Trump owes him for his years of loyalty.

Meanwhile, one of Cohen's New York associates told CNN that the lawyer "knows a lot of things about the president and he's not averse to talking in the right situation."

"If they want information on Trump, he's willing to give it," the person said.

On Wednesday, Cohen resigned from his post on the Republican National Committee. In a letter Cohen wrote to the RNC's chairwoman, Ronna McDaniel, Cohen criticized the president's much-maligned family-separation policy at the US-Mexico border in a rare rebuke of his old boss.

"As the son of a Polish holocaust survivor, the images and sounds of this family separation policy is heart wrenching," Cohen wrote. "While I strongly support measures that will secure our porous borders, children should never be used as bargaining chips."

Experts said it looked as if Cohen was sending up flares to his old boss.

"He may be trying to send a message to Trump that he is prepared to cooperate unless ... " the Harvard law professor Alan Dershowitz, who often speaks with Trump, told Business Insider.