Asked about Allen late Saturday, the FBI did not confirm his identity and told AFP it had nothing to add beyond what was disclosed in news conferences.
A LinkedIn profile with the name “Cole Allen” showed a picture of a man, who appeared to match a photo of the suspect shared by Trump.
The social media profile said Allen was a mechanical engineer, computer scientist, game developer and teacher.
Glitzy annual gala
During the chaotic incident, tactical teams with guns drawn took position on the stage where Trump had been sitting during dinner before he was evacuated.
Police surrounded the hotel, and helicopters hovered overhead.
The security breach occurred after the welcoming speech and during dinner, before Trump was due to speak.
Cabinet members were evacuated first as confusion and concern spread through the partying guests.
One administration official, Mehmet Oz, told journalists that “shots were fired upstairs” as he was rushed out by security.
Trump was the target of an assassination attempt during a rally in Butler, Pennsylvania in 2024. A gunman fired several shots, killing an audience member and lightly wounding the president in the ear.
A few months later, another man was arrested after a Secret Service agent saw the barrel of a rifle poking from the bushes on the perimeter of the West Palm Beach golf course where Trump was playing a round.
The Washington Hilton, where Saturday’s gala was taking place, was the site where Republican President Ronald Reagan was shot by a would-be assassin in 1981.
The White House Correspondents’ Association invited Trump this year despite his repeated attacks on the media.
Unlike all other presidents from the past 100 years, Trump had never attended while in office.
The “Nerd Prom” — as attendees dub it — brings together journalists and the who’s who of Washington to raise funds for scholarships and awards.
The event often has a comedian joking about the president, who traditionally makes a few cracks of his own, though no comedian was booked this year.