• Cole Allen, 31, pleads not guilty to charges of attempted assassination of Trump.
• The charges include attempted assassination, assault on a federal officer, and firearms offenses.
• Allen allegedly fired a shotgun during the incident at the White House Correspondents' Dinner.
• The case raises questions about the prosecution due to possible conflicts of interest.

The man accused of attempting to assassinate U.S. President Donald Trump at a White House gala pleaded not guilty to all charges during a court appearance on Monday. Cole Allen, 31, faced charges including attempted assassination, assault on a federal officer, and firearms offenses. Allen did not speak in court; his attorney entered the plea on his behalf, according to Reuters and BBC.

Federal prosecutors allege that Allen fired a shotgun at a Secret Service agent during a chaotic scene at the White House Correspondents' Dinner held on April 25. He reportedly stormed a security checkpoint, leading to an immediate response from law enforcement. Allen was apprehended at the scene without causing further harm, according to India Times and South China Morning Post.

During his courtroom appearance, Allen wore an orange jumpsuit and was shackled. His treatment in custody has raised concerns, as previous judges criticized the conditions he faced. The trial could involve disputes over the prosecution, as allegations have been made regarding the potential bias from U.S. Attorney Jeanine Pirro, who was present at the gala, according to Al Jazeera and Channel News Asia.