 FBI keeps digging for his would-be assassin's motive. There is conflicting information about whether or not the 20-year-old shooter wrote a threatening message on the gaming platform Steam. Senators were told in a briefing that the shooter wrote, quote, July 13th will be my premiere. Watch as it unfolds. But now we're told the FBI cannot confirm whether the Steam account is real or fake yet. Fox's Brian Yannis. America is listening to Fox News.