A supporter of US President Donald Trump sits in House Speaker Nancy Pelosi's office during the riot at the US Capitol on Wednesday. SAUL LOEB/AFP via Getty Images A man who was pictured at House Speaker Nancy Pelosi's desk as pro-Trump rioters stormed the US Capitol building on Wednesday has been arrested. The man, who first identified himself as Richard Barnett from Gravette, Arkansas, in an interview with a New York Times reporter, said on Facebook last week that he was a white nationalist. Barnett had previously raised money for a cause backed by QAnon, and he told local news outlets in Arkansas that he believed the presidential election was stolen from Trump. He was arrested on charges of entering and remaining on restricted grounds, violent entry, and theft of public property. Visit Business Insider's homepage for more stories. A man who was pictured sitting at House Speaker Nancy Pelosi's desk as rioters who support President Donald Trump stormed the US Capitol building on Wednesday has been arrested.Richard Barnett from Gravette, Arkansas, was arrested on Friday, Department of Justice officials told NBC News.Barnett was reportedly arrested in Arkansas, on charges of entering and remaining on restricted grounds, violent entry, and theft of public property.