As most attendees settled into the ballroom, a significant security breach occurred just as officers were in the process of dismantling one of the metal detectors.
Surveillance footage captures a dramatic scene where Allen is seen sprinting past a cluster of officers, clutching a shotgun.
The video also reveals an officer discharging their firearm three times at close range as Allen makes his escape.
Standing just behind Allen, several agents are present when the shots are fired, yet none appear to be hit by the gunfire.
This footage has been released amid rising scrutiny over how a Secret Service agent ended up injured during the incident.
The agent, who was reportedly wearing a bulletproof vest, was hospitalized after being struck by a bullet.
“There is no evidence the shooting was the result of friendly fire,” US Attorney Jeanine Pirro said.
“My office along with the FBI will continue this extensive investigation to bring Cole Allen to justice.”
Allen’s lawyers have questioned whether their client actually fired his shotgun during the security breach.
They told a Washington court that there is no visible muzzle flash coming from Allen’s gun.
Prosecutors told the court they had found what appeared to be a buckshot pellet at the scene.
Such a pellet would indicate Allen did fire his shotgun.
A typical 12-gauge shotgun shell will contain about nine pellets, which resemble ball bearings.
But Allen has not been charged with shooting the officer, but still faces life behind bars on other charges.
“They said it wasn’t friendly fire, it wasn’t us,” Trump said.
He brushed off suggestions he start wearing a bulletproof vest.
“I don’t know if I can handle being 20 pounds heavier,” he said.
Other footage released this morning shows Allen walking down a hallway at the hotel and looking around the gym.
Pirro said the video indicated Allen was “casing the area” the day before the breach.
Allen did not seek to be released on bail while appearing in court today.
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