Leticia was founded in 1867 as San Antonio. The origin of its current name has been lost to history. In any case, it was part of Peru until 1922, when both countries signed a controversial agreement that ceded the land to Colombia. In 1932 a war broke out between Colombia and Peru, ending in 1933 after the League of Nations negotiated a cease-fire, ultimately awarding Leticia to Colombia. In the 1970s Leticia became a lawless hub of narcotics trafficking until the Colombian army moved in and cleaned things up.