Donald Trump's would-be assassin was flagged as "suspicious" by the Secret Service up to an hour before he began shooting but was lost in the crowd. The attacker had brought a rangefinder and backpack to the event which raised suspicions with the Secret Service. He had visited the site of the attack at least once in the days before and searched online for symptoms of depression and images of Trump and Biden. Over 200 interviews have been conducted and 14,000 images reviewed, but no clear motive has been identified. The attacker was seen on the roof about 20 minutes before opening fire and was engaged by Secret Service snipers within 26 seconds.
