US Presidential candidate Hillary Clinton has been diagnosed with pneumonia after she fainted as she prematurely left a 9/11 memorial service in New York.

The Democratic presidential nominee has since cancelled a campaign trip to California after she was given the diagnosis on Friday.

12 Hillary Clinton is helped into a car by her security detail following a 'medical situation', with helpers holding both arms to keep her steady Credit: Twitter

12 The presidential candidate can be seen wobbling as she is taken to the car Credit: Twitter

12 Clinton staggers into the car, with her taken to her daughter's apartment nearby Credit: Twitter

12 Hillary Clinton was led away from the memorial service Credit: Reuters

12 The presidential candidate was taken to her daughter's apartment after feeling overheated during the ceremony Credit: Getty Images

12 Clinton is now feeling better, a spokesman has said Credit: AP:Associated Press

12 Hillary Clinton arrives at the New York City 9/11 memorial service, where she was later rushed from with reports of a medical episode Credit: Getty Images

12 Clinton reportedly lost a shoe as she was rushed away from the New York City service Credit: Reuters

The 68-year-old was due to leave this morning for a two-day trip that included fundraisers and a speech on the economy.

The announcement is likely to add fuel to the flames of rumours circulating on the internet surrounding the White House hopeful's health.

Clinton left a 9/11 memorial service in New York early yesterday and collapsed on her way to her car, with sources saying that she lost a shoe as she was helped into a van.

In footage of the incident, Clinton can be seen resting on a concrete barrier as her car is driven up.

But as she makes her way to the car, the presidential candidate can be seen to stagger and sway, with helpers desperately trying to keep her upright.

She appears to almost fall to the floor before she is bundled into the car and whisked away.

A source told Fox News that Clinton's knees appeared to buckle as she left the service.

12 Her doctor has since revealed that the politician is suffering from pneumonia

Her doctor Lisa Bardack said in statement: "Secretary Clinton has been experiencing a cough related to allergies. On Friday, during follow up evaluation of her prolonged cough, she was diagnosed with pneumonia.

"She was put on antibiotics, and advised to rest and modify her schedule.

"While at this morning's event, she became overheated and dehydrated.

"I have just examined her and she is now re-hydrated and recovering nicely."

A spokesman for Clinton, Nick Merrill, said Clinton had attended the service for an hour and 30 minutes.

He said: "Secretary Clinton attended the September 11th Commemoration Ceremony for just an hour and thirty minutes this morning to pay her respects and greet some of the families of the fallen.

"During the ceremony , she felt overheated so departed to go to her daughter's apartment, and is feeling much better."

BREAKING: law enf source: Hillary Clinton just left 9/11 ceremony w/medical episode, appeared to faint on way into van, helped by security — RickLeventhalFoxNews (@RickLeventhal) September 11, 2016

Source tells me Hillary Clinton "clearly having some type of medical episode" & had to be helped into van by her protective detail at WTC — RickLeventhalFoxNews (@RickLeventhal) September 11, 2016

MORE ON #HILLARY per witness: "unexpected early departure"; she stumbled off curb, "knees buckled", lost a shoe as she was helped into van — RickLeventhalFoxNews (@RickLeventhal) September 11, 2016

One journalist who has been following Clinton on the campaign trail tweeted that Clinton left the 9/11 ceremony with the press pool not told where she was going.

Fox News also reported that the former Secretary of State had to wait for her motorcade for several minutes as her security detail had not realised she would be leaving early.

Clinton arrived at the New York ceremony in the morning, wearing dark glasses, having released a statement saying it was important to honour the lives and "tremendous spirit" of the victims and responders of September 11, 2001.

She and opposing candidate Donald Trump both attended the morning service to mark 15 years on from the September 11 attacks, with Trump remaining after she had left.

Clinton has been plagued by speculation that she is not fit enough to serve as US President.

She was even jokingly challenged to show she could open a jar of pickle to prove she was in good health.

The candidate also had her pulse taken as part of the joke.



12 Democratic presidential candidate Hillary Clinton spoke with New York Mayor Bill de Blasio at the service Credit: Reuters

12 Clinton stayed at the service for an hour and a half before leaving Credit: Reuters

Clips of Clinton appearing to cough up green mucus also sent ripples through the presidential race.

Clinton had a coughing fit while speaking at a rally in Cleveland, Ohio, forced to take a moment to sip some water and recover.

Her opposing candidate Trump has used the incidents to claim that Clinton is too weak to serve as the US president, also saying she takes too many naps to properly serve.

He also said he had "no idea" what had happened to Clinton when he was asked about her health following the ceremony.

12 President Obama observed a silence before speaking at the Pentagon Credit: Getty Images

Clinton emerged from her daughter Chelsea's home two hours later walking unaided and waving to reporters.

The Democratic candidate repeatedly said she "felt great" when asked by journalists but failed to answer questions about what exactly happened.

She also stopped to hug a child before walking out of shot.

The revelation is likely to add fuel to rumours around the candidates health which have been circulating for some time.

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