Donald Trump insisted that he won Monday nights debate despite having a faulty microphone, which he suggested might have been set up to undermine his performance.

My microphone in the room they couldnt hear me, the GOP nominee told Fox News Fox and Friends in a Tuesday phone interview. You know it was going on and off which isnt exactly great.

I wonder if it was set up that way, he added. It was terrible.

Trump recalled having no problem with the microphone during the sound test an hour before the debate, which led him to believe something sinister might have been done in the interim.

It was on and off and it was much lower than hers, he said, referring to Democratic presidential candidate Hillary Clinton . I dont want to believe in conspiracy theories of course but it was much lower than hers and it was crackling.

Later, Trump blamed the microphone following reports that he sniffled throughout the debate.

No sniffles, no, he said. The mic was very bad, but maybe it was good enough to hear breathing.

The audience appeared to hear Trump just fine when he said, My strongest asset, maybe by far, is my temperament. That comment prompted the crowd to erupt into laughter , ignoring instructions not to make noise.

Although Trumps claims drew widespread mockery, he apparently had a point.

Regarding the first debate, there were issues regarding Donald Trumps audio that affected the sound level in the debate hall, the Commission on Presidential Debates said in a statement Friday. It offered no other details on the problem.

Clinton mocked Trumps complaints during a press conference aboard her campaign airplane on Tuesday. The former secretary of state had begun to walk away from the gaggle of reporters, when she turned around to address Trumps frets about the microphone.

Anybody who complains about the microphone is not having a good night, she said.

Contrary to his remarks, Trump has routinely used conspiracy theories to attack his political opponents. He even jumped on conspiracists claims that Clinton and her husband, former President Bill Clinton , murdered an aide. And of course, the brash businessman laid the groundwork for his presidential run by pushing the birther conspiracy theory that President Barack Obama was not born in the United States.

Trumps complaints about the microphone were not the only aspect of the debate he suggested was unfair to him. He accused NBC News moderator Lester Holt of bias against him , giving Holt a C grade for his performance.

This article has been updated to include Clintons reaction to Trumps microphone claims and to include a statement from the Commission on Presidential Debates about Trumps audio levels.

Editors note: Donald Trump regularly incites political violence and is a serial liar , rampant xenophobe , racist , misogynist and birther who has repeatedly pledged to ban all Muslims 1.6 billion members of an entire religion from entering the U.S.