WASHINGTON (AP) — The man accused of planting a pair of pipe bombs outside the headquarters of the Republican and Democratic national parties in Washington on the eve of the U.S. Capitol attack told investigators he was “disappointed” in the outcome of the 2020 presidential election lost by President Donald Trump, the top federal prosecutor for the nation’s capital said Friday. U.S. Attorney Jeanine Pirro told ABC News Live that she believes it is “unmistakable” that Brian Cole Jr. was responsible for placing the pipe bombs based on evidence collected by investigators. Pirro also suggested Cole may have been motivated by claims by Trump and his Republican allies that the 2020 election was stolen from him. “He was disappointed in various aspects of the election, but this guy was an equal opportunity bomber,” Pirro said. “He was disappointed to a great deal in the system. Both sides of the system.” Cole confessed to planting the devices on Jan. 5, 2021, two people familiar with the matter told The Associated Press. Cole also indicated that he believed conspiracy theories around the 2020 election and expressed views supportive of Trump, said the people, who were not authorized to discuss by name an ongoing investigation and spoke on condition of anonymity.