President Donald Trump's hand-picked interim U.S. attorney delivered bombshell testimony that may have destroyed her case against former FBI Director James Comey.

Lindsay Halligan, who was tapped as interim U.S. attorney for the Eastern District of Virginia, admitted during brief testimony Wednesday that the indictment in the case against the Trump foe was never shown to or voted on by a full grand jury before it was presented in open court, reported CNN.

"HUGE development IN hearing for Comey selective prosecution motion," posted former federal prosecutor Harry Litman. "It turns out that the grand jury NEVER saw the operative indictment. Whole separate basis for dismissal."

Comey's defense team argued that development should prevent further prosecution in the case, saying "there is no indictment," and Judge Michael Nachmanoff gave the Department of Justice until 5 p.m. to respond to the revelations.

"This is almost unreal incompetence," posted Chris Geidner, author of the "Lawdork" blog.

Defense attorney Michael Dreeben argued in the hearing the case was brought at Trump's direction and based on his animosity to the former FBI director, and federal prosecutor Tyler Lemons responded by arguing that Halligan was “not a puppet."