On the afternoon of the 13th local time, when Trump was giving a speech at a campaign rally in Pennsylvania, USA, gunshots rang out at the scene. He was immediately evacuated from the podium under the protection of Secret Service personnel. Live footage showed that Trump had blood on his right ear. US Secret Service personnel confirmed to the media that Trump was in safe condition. One person was killed and two were seriously injured in the incident. According to the New York Times, two law enforcement officials said that law enforcement officers recovered an AR-15 semi-automatic rifle from a deceased white man. They believed that the man was the shooter, and the shooter had been killed. The federal department is using its National Firearms Procurement Database to urgently track down the weapon, which is essential to determine the identity of the shooter.