Trump shot at rally in failed assassination attempt. Here's everything we know so far.

Former President Donald Trump was shot and injured in an assassination attempt on Saturday night that also killed a spectator and critically injured two others. Snipers killed the shooter, a 20-year-old man, after he fired eight rounds at the rally in Butler, Pennsylvania.

The former president could be seen touching his ear as the shooting unfolded before he was shielded by Secret Service and whisked offstage — with blood on his face — and into an SUV to safety. Trump said in a social media post that a bullet pierced the upper part of his right ear.

"I knew immediately that something was wrong in that I heard a whizzing sound, shots, and immediately felt the bullet ripping through the skin," he said. "Much bleeding took place, so I realized then what was happening."