President of the United States, Joe Biden fell on stage at the Air Force Academy in Colorado.

He stumbled on a sandbag while handing out diplomas at a graduation ceremony for the US Academy.

Mr Biden, who is the oldest serving president of the US is 80 years old, was helped back onto his feet and appeared to be unhurt. 

While returning to the White House later on he bumped his head on the door exiting the helicopter. "I got sandbagged!" the president joked as he walked past the reporters. 

Biden had been standing for about an hour and a half to shake hands with each of the 921 graduating cadets.

Footage shows Mr Biden appearing to point at one of two sandbags used to prop up his teleprompter as he was helped up by an Air Force official and two members of his Secret Service detail.

He was seen walking back to his seat unassisted and later jogging back to his motorcade when the ceremony ended.

 White House communications director Ben LaBolt wrote on Twitter. "He's fine. There was a sandbag on stage while he was shaking hands." 

White House press secretary Karine Jean-Pierre said Mr Biden had boarded the plane flashing "a big smile", although one reporter noted that he did not take questions before the flight.

Critics have expressed their concern that Joe Biden is too old to run for a second term as president. This comes after Biden revealed he is seeking a second term as President. 

This fall, in addition to previous stumbles from his bicycle and on the way up the Air Force One stairs, could add to the concerns of the US citizens on his health. 

Former President Donald Trump, reacted to the incident terming it as crazy. 

"I hope he wasn't hurt. That's not inspiring," posted Trump on his Twitter handle.

White House physician Dr Kevin O'Connor revealed that, "The President remains fit for duty, and fully executes all of his responsibilities without any exemptions or accommodations."

Dr O'Connor added that Mr Biden walks with a "stiffened gait", largely caused by wear and tear on his spine and nerve damage in his feet, but that his condition was unchanged from a previous physical in November 2021.