Donald Trump uploaded a photo to his Truth Social platform claiming to show the alleged gunman being apprehended.
Valeriy Repeta was on his way back from checking on the power plant's filter-regenerators when the explosion happened.
US correspondent Mark Stone reports from the White House correspondents' dinner where Donald Trump was due to speak.
Donald Trump gives a news conference following a shooting at the White House Correspondents' Dinner.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results