New footage shows how Trump dinner gunman charged through security in four seconds

New footage released by prosecutors shows the four chaotic seconds when a gunman burst from a hotel doorway and charged through a security checkpoint as President Donald Trump was attending a press gala.

The CCTV video appears to show a security agent opening fire on the sprinting gunman, who raises a long-barrelled weapon, though it is unclear if he discharges the firearm.

The clip does not show the bit where the alleged attacker fell over and was arrested on Saturday at the Washington Hilton, as investigators have recounted.

Cole Tomas Allen, 31, is charged with attempting to assassinate President Trump at the White House Correspondents' Association dinner.

The US justice department says the video also shows Allen "casing the area" at the hotel, on the day before the dinner was held in a basement ballroom there.

Prosecutors say the defendant checked into the hotel as a guest one day before the incident.

The accused was able to run down the hotel corridor before he was tackled, according to Acting US Attorney Todd Blanche.

In charging documents, officials say one officer was hit in the ballistic vest by a single shot fired by the suspect.

That same officer "drew his service weapon and fired multiple times" at the suspect, who was not struck by the officer's bullets, said Blanche.

The defendant is accused of carrying a semi-automatic handgun, a pump-action shotgun and three knives as he charged past the security checkpoint.

Trump, Vice-President JD Vance, cabinet members, and other White House officials were rushed from the hotel ballroom as the gunfire rang out on Saturday night.

The video, posted on X by US Attorney for Washington DC Jeanine Pirro, appears to be a higher quality version of a clip posted by Trump in the aftermath of Saturday's incident.

The footage also appears to show the suspect walking down a hotel corridor on the eve of the gala and popping into the hotel gym.

The video from the night of the attack shows nearly a dozen security agents gathered around a security checkpoint in a corridor at the hotel. Two officers appear to set up a metal-detector.

A man wearing a long dark coat walks through the corridor and disappears into a doorway.

A security agent with a dog lingers at the doorway briefly before turning to continue down the corridor.

A moment later the gunman, having shed his coat, re-emerges from the doorway and sprints through a metal-detector. The coat was concealing a 12-gauge shotgun, according to an affidavit filed by prosecutors.

The footage appears to show an officer draw and fire his handgun at the suspect.

A Secret Service agent was shot, but not seriously wounded during the attack, say officials. He was saved by his ballistic vest, Trump said.

Ballistics experts have been investigating whether the Secret Service officer was hit by a bullet fired by the suspect, or by other law enforcement at the scene.

But Pirro said in Thursday's post on X: "There is no evidence the shooting was the result of friendly fire."

The director of the US Secret Service told Fox News on Thursday that the suspect fired at a Secret Service agent at "point-blank range".

"All the evidence that I've seen, the suspect shot our officer point-blank range with a shotgun," Sean Curran told the network.

"Our officer heroically returned fire while being shot point-blank range in the chest with a shotgun, he was able to get off five shots."

"It appears that the suspect hit his knee, while being engaged by the officer, on one of our magnetometer boxes and began to fall to the ground.

"That's what appears to be, and at that moment is when officers and agents were able to subdue him and pile on top of him."

Allen faces additional charges, including transportation of a firearm between states to commit a felony and discharging a firearm in a crime of violence - both of which have maximum sentences of 10 years.