Trump assassination attempt: What we know so far

Former US president and current Republican presidential candidate Donald Trump survived an attempt on his life at a campaign rally in Butler, Pennsylvania on Saturday evening after a bullet grazed his right ear as he spoke onstage. Two people, a bystander and the suspected gunman, were killed in the shooting as Secret Service agents positioned around the rally returned fire and hustled the former president from the stage. Here's what we know so far.