India, April 27 -- Suspected gunman Cole Tomas Allen arrested for the shooting at the White House Correspondents' Dinner targetting President Donald Trump and several US officials allegedly made an anti-Trump manifesto and sent it out to his family member minutes before opening fire at the gala venue on Sunday.

California-based Allen is a highly educated tutor and amateur video game developer opposed to Trump policies, the Associate Press reported.

In the manifesto that he sent to family members minutes before the attack, the 31-year-old described himself as "Friendly Federal Assassin" and railed against recent actions taken by the US government under Trump, though he did not name the Republican president directly, the reported added, c...