Former President Donald Trump was quickly escorted off stage at a rally in Pennsylvania after a series of loud bangs, possibly gunshots, were heard.
Footage shows Trump raising his hand to his ear and ducking as the noises occurred, prompting immediate action from Secret Service agents.
Trump's campaign released a statement confirming his safety and stating he was being checked at a local medical facility.
The Secret Service initiated an investigation into the incident, and the White House has confirmed that President Biden was briefed on the situation.
