WATCH: Police Dog Appeared To Flag Wannabe Trump Assassin Seconds Before Attack

A police K9 followed would-be Trump assassin Cole Allen into a side room just seconds before he charged through a security checkpoint at the White House Correspondents’ Dinner last weekend, newly released Justice Department footage shows.The video, posted Thursday by U.S. Attorney Jeanine Pirro, captures the Secret Service dog trailing Allen into the room, where investigators say the gunman removed a large black jacket concealing his shotgun. The K9 briefly entered the doorway before the handler paused, looked inside for roughly 10 seconds, and appeared to speak to someone in the room. It remains unclear whether the handler was a Secret Service agent or with another law enforcement agency.Immediately after the officer and K9 walked away, Allen charged through the security checkpoint armed with his fully loaded Mossberg 12-gauge pump-action shotgun. The Daily Wire reached out to the Secret Service seeking clarification on the interaction captured in the footage.Allen sprinted down the hallway at approximately 8:36 p.m. ET, just as agents began dismantling one of the metal detectors at the checkpoint. Minutes before he made his way downstairs from his hotel room, Allen had been monitoring news updates on the White House Correspondents’ Dinner and President Donald Trump’s travel to