On this day, 117 years ago, on February 1, 1908 (December 29, 1907), King Carlos I of Portugal was assassinated. King Carlos I of Portugal On February 1, 1908, the King and Prince of Portugal were shot and killed by assassins near the Ministry of the Interior in Lisbon. The queen survived. The assassins were a Portuguese sergeant who plotted to stage a riot. After the incident, Manuel was only 19 years old.