The Department of Justice is urging a federal court to keep Cole Allen, the suspect accused of opening fire at the Washington Hilton Hotel during the White House Correspondents' Association Dinner, behind bars pending trial. 

The DOJ's filing on Wednesday includes a new photo showing Allen armed and inside a hotel room before the shooting unfolded.

"The United States of America, by and through its attorney, the United States Attorney for the District of Columbia, respectfully submits this memorandum in support of its oral motion to detain defendant Cole Tomas Allen pending trial," a filing notes.

"At approximately 8:03 p.m., while back inside his hotel room, the defendant used his cellphone to take a photograph of himself in the mirror," the filing states, noting that Allen "appeared to be wearing a small leather bag consistent in appearance with the ammunition-filled bag later recovered from his person (item 1), a shoulder holster (item 2), a sheathed knife consistent in appearance with one of the knives later recovered from his person (item 3), and pliers and wire cutters consistent in appearance with those later recovered from his person (item 4)."