Video: Hillary Clinton Leaves During 9/11 Commemoration Service After She Felt 'Overheated'

During a ceremony commemorating the victims of the Sept. 11 attacks, Democratic presidential candidate Hillary Clinton "felt overheated," a campaign spokesman said, and left the ceremony in New York early.

Below is video, posted to Twitter, that appears to show an unsteady Clinton being helped into a vehicle as she exited the ceremony.

NPR reports that Clinton left without warning after an hour and a half, and "her traveling press corps was not taken with her and didn't know her whereabouts for quite some time. Here is the statement released earlier from the Clinton campaign's spokesman on the incident:

The Associated Press reports that, according to Clinton's doctor, the candidate had been diagnosed Friday with pneumonia and placed on antibiotics. The doctor said Sunday evening that Clinton is "recovering nicely" after the incident at the 9/11 memorial.

Earlier, CNN posted video showing Clinton posing for a photograph with a small child after leaving her daughter's apartment. She walks away, waving to the crowd.