Prosecutors allege Cole Allen was armed when he sprinted past security at a Washington DC hotel. -AP
The US Justice Department has added a charge of assault on a federal officer with a deadly weapon to the case against a man accused of trying to assassinate President Donald Trump at the White House Correspondents' Association Dinner at the Washington Hilton last month.
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The new charge, which formally accuses the suspect, Cole Allen, of firing at a US Secret Service agent at a security checkpoint, is part of a new four-count indictment returned by a federal grand jury in Washington DC.
The other three counts are charges Allen previously faced including attempted assassination, discharge of a firearm during a crime of violence and illegal transportation of a firearm and ammunition across state lines.
Prosecutors allege that Allen, 31, of California, was armed with a shotgun and a pistol when he sprinted past security in an attempt to assassinate Trump and other US officials on April 25.