Junius Brutus Booth Jr. himself was briefly imprisoned in Washington, D.C., after his brother assassinated Abraham Lincoln. At the time of the assassination, he was fulfilling an acting engagement at Pike's Opera House in Cincinnati. Booth left Cincinnati by train on April 17 and arrived in Philadelphia on April 19. Booth notified the U.S. Marshal of his presence in the city and was arrested and hurried by train to the Old Capitol Prison, where he was interrogated and released.