Trump rally shooter acted alone, FBI says

The news: The suspected gunman at Donald Trump's rally on Saturday was acting alone and used an AR-style rifle purchased legally to shoot at the former US president, FBI officials said.

The context: The FBI officials, in a call with reporters, said they had no indications of any mental health issues with the suspect, who was identified as 20-year-old Thomas Matthew Crooks, from Bethel Park, Pennsylvania. The assailant was killed by a US Secret Service sniper after firing at Trump, injuring him and killing a 50-year-old attendee.

FBI officials said the investigation was at an early stage and that they had not yet identified an ideology associated with the suspect. They said finding the motive behind the shooting was one of their priorities.

Trump is due to receive his party's formal nomination as the presidential candidate at the Republican National Convention, which kicks off in Milwaukee, Wisconsin, on Monday.