President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE’s lawyer Rudy Giuliani suggested on Wednesday that the FBI may have placed a spy in Trump’s presidential campaign.

In an interview with Fox News on Wednesday night, Giuliani told host Laura Ingraham "I don't know," when asked if there was a spy in the 2016 campaign.

Giuliani, however, resurfaced the concept later on when discussing what he said were instances of misconduct.

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"What they did with [Paul] Manafort, what they did with Michael Cohen, all the illegitimate things they’ve done — possibly placing a spy in the Trump campaign,” Giuliani said. He was referring to last month's FBI raids on Trump's personal attorney, Michael Cohen's, home and office, and other raids of former Trump campaign head Paul Manafort Paul John ManafortOur Constitution is under attack by Attorney General William Barr Bannon trial date set in alleged border wall scam Conspicuous by their absence from the Republican Convention MORE's home.

“All these things are areas where indictments have been dismissed because of government misconduct,” Giuliani said.

“I do not understand what Bob was thinking of, hiring these people,” he added, referring to special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE.

Trump has repeatedly slammed Mueller's probe into alleged ties between his presidential campaign and Russian meddling in the 2016 election as a “witch hunt” and has called for the special counsel's investigation to end on numerous occasions.

Giuliani also called for the end of Mueller's probe during the interview Wednesday.