The FBI has identified 37 persons of interest in the killing of Brian Sicknick, a Capitol Police officer, during the Jan. 6 riot in the Capitol building. The law enforcement agency is probing the suspects’ involvement in Sicknick’s death. Members of the mob of pro-Trump extremists that stormed the Capitol hit Sicknick with a fire extinguisher, and he later succumbed to his injuries. According to a report obtained by The New York Times, 14 other officers were injured during the insurrection, and inspectors general from the Justice Department and Homeland Security are reviewing their agencies’ responses.