Former US President Donald Trump was rushed off stage after gunshots erupted at a rally in Pennsylvania in an apparent assassination attempt.
The suspect was shot dead at the scene by US Secret Service agents, the service's spokesperson Anthony Guglielmi said. He added that one bystander was killed in the shooting and two others were critically injured.
Law enforcement sources told the BBC's US partner CBS News that the male attacker had been armed with a rifle and had fired from an elevated structure a few hundred metres away outside the venue. They added that the attack was being treated as an assassination attempt.