Following the epic presidential debate in which Hillary Clinton was widely declared the winner against rival Donald Trump,conspiracy theorists claim the Democratic nominee may have secretly had help.

Eagle-eyed observers claim to have spotted Clinton, wearing what appears to be an hidden earpiece during the debate,Daily Mirror reports.

Footage from the 90-minute discussion at Hofstra University in New York also appears to show the outline of wires and a battery pack under Clinton's jacket.

 Catholic Online website asked: "What is it for? Is it so a team can feed her answers? Is it an anti-seizure device? A hearing aid?"

Social media users were also quick to point out that Republican Trump was not wearing a similar device.Following criticism of his debate performance, Trump claimed he was given a "very bad" microphone and that debate moderator, Lester Holt of NBC News, asked him "very unfair questions".

He told Fox News:
"I don't want to believe in conspiracy theories, of course, but it was much lower than hers and it was crackling."In response, Clinton told reporters on her campaign plane: "Anyone who complains about the microphone is not having a good night."
Fueling earlier conspiracy theories that Clinton is hiding a secret illness, some observers suggested the mystery box was related to her alleged ill-health.