Democratic presidential candidate Hillary Clinton on Sunday became "overheated" at a Sept. 11 memorial ceremony in New York City and departed the event early, according to a campaign spokesman.
Clinton left the New York event and went to daughter Chelsea Clinton's apartment and was "feeling much better," according to her spokesman Nick Merrill.
News of a "medical episode" started to appear shortly after Clinton departed from the ceremony. According to FOX News, the former secretary of state stumbled off the curb, her "knees buckled" and one of her shoes fell off as she was helped into a van as she made her "unexpected early departure."
After her departure, reporters following the Democratic nominee on the campaign trail were prevented from leaving the media area for a period of time.
Temperatures were in the high 70s and low 80s Sunday morning in New York City during the event.
Following the incident, the presidential candidate told reporters she was "feeling great" upon leaving her daughter Chelsea's home in Manhattan, where she was taken after departing the memorial service.
The episode comes amid concerns from some critics who suggest the 68-year-old presidential candidate may be suffering health issues, citing repeated coughing spells on the campaign trail. Republican nominee Donald Trump has echoed such concerns, but has yet to comment on Clinton's health following the 9/11 event.
Clinton's personal physician released a letter in July describing her as being in "excellent health" and "fit to serve."