35 years unsolved
At the beginning of a tumultuous civil war in El Salvador, Roman Catholic archbishop Oscar Arnulfo Romero was assassinated on Mar. 24, 1980.
The archbishop was shot through the heart by a sniper while celebrating Mass.
An outspoken advocate of social reform, Romero was loved by the poor and loathed by conservatives.
Following the news of his death, a dozen bomb explosions damaged buildings and factories throughout the capital city.
Four years later, a former U.S. ambassador Robert White claimed that a Salvadorian rightist leader Roberto d'Aubuisson ordered the assassination of the archbishop.
The assassin has never been identified, and no one has been prosecuted for the murder.
Archbishop Romero was beatified by Roman Catholic officials on May 23, 2015, 35 years after his death. Over 260,000 people attended the ceremony.