WASHINGTON, May 4 -- Investigators have found clear evidence that the alleged gunman who attempted to storm a Washington media gala attended by US President Donald Trump actually shot a Secret Service officer, a federal prosecutor said yesterday.

Questions had lingered over whose weapon had struck the officer in his protective vest on the night of the April 25 gala, after at least one Secret Service agent also opened fire.

Jeanine Pirro, the US prosecutor in Washington, told CNN's "State of the Union" yesterday that investigators could now definitely say it was gunfire from the man charged with the attack, Cole Allen.

"We now can establish that a pellet that came from the buckshot from the defendant's Mossberg pump-action shotgun was i...