A federal prosecutor said Sunday that authorities have forensic evidence indicating a federal agent was shot during an alleged assassination attempt targeting former President Donald Trump at a White House Correspondents' Association dinner.

US Attorney for the District of Columbia Jeanine Pirro told CNN that investigators have established a connection between the suspect's weapon and an injured Secret Service officer through ballistic analysis.

"We now can establish that a pellet that came from the buckshot from the defendant's Mossberg pump-action shotgun was intertwined with the fiber of the vest of the Secret Service officer," Pirro stated during the television interview.

The comments represent the first public disclosure of specific forensic evidence in what appears to be an ongoing federal investigation. Pirro indicated the evidence demonstrates the defendant's weapon fired the projectile that struck the agent's protective vest.

Details about the timing, location and circumstances of the alleged incident at the White House Correspondents' Association dinner were not provided in Pirro's statement. The investigation appears to be continuing, with federal authorities building their case against the unnamed defendant.