text:  There are growing questions about how the gunman was able to get so close. He's been identified as 20-year-old Thomas Matthew Crooks. An eyewitness told the BBC that he'd seen him armed with a rifle crawling along the roof of a nearby building and had told the police. World leaders have expressed their shock at the attempted killing of Donald Trump. The Australian leader, Anthony Albanese, said there was no place for violence in the political process.