The gunman, who was killed by Secret Service personnel, fired multiple shots at the stage from an ‘elevated position outside of the rally venue,’ the agency said.

The gunman was identified as a 20-year-old from a Pittsburgh suburb, but his motivation remained a mystery; the FBI is investigating the incident as potential domestic terrorism.

Notable officials, including former Presidents George W. Bush and Barack Obama, expressed gratitude that the presumptive Republican presidential nominee appeared to be OK.

Addressing the nation just hours after the shooting, Biden said he was relieved Trump was reportedly ‘doing well.’ They later spoke on the phone, the White House said.