Watch: How chaos unfolded at Trump rally shooting

Former US President Donald Trump was rushed off stage after gunshots erupted at a rally in Pennsylvania in an apparent assassination attempt.

Footage showed him grimace and raise a hand to his right ear, before ducking as several sharp cracks - a series of shots - broke out.

The suspect was shot dead at the scene, one bystander was killed and two others were critically injured, officials said.

This is how events unfolded.