On February 15, 1898, an explosion of unknown origin sank the battleship U.S.S. Maine in the Havana, Cuba harbor, killing 266 of the 354 crew members. The sinking of the Maine incited United States passions against Spain, eventually leading to a naval blockade of Cuba and a declaration of war.
Ostensibly on a friendly visit, the Maine had been sent to Cuba to protect the interests of Americans there after riots broke out in Havana in January. An official U.S. Naval Court of Inquiry reported on March 28 that the ship, one of the first American battleships and built at a cost of more than two million dollars, had been blown up by a mine without laying blame on any person or nation in particular, but public opinion in the United States blamed the Spanish military occupying Cuba anyway. Subsequent diplomatic communications failed to resolve the matter, leading to the start of the Spanish-American War by the end of April.
Sounds a lot like a “weapons of mass destruction” type scare scenario to me.