Other related events include the 1915 Singapore Mutiny, the Annie Larsen arms plot, Christmas Day Plot, events leading up to the death of Bagha Jatin, as well as the German mission to Kabul, the mutiny of the Connaught Rangers in India, as well as, by some accounts, the Black Tom explosion in 1916. The Indo-Irish-German alliance and the conspiracy were the target of a worldwide British intelligence effort, which was successful in preventing further attempts. American intelligence agencies arrested key figures in the aftermath of the Annie Larsen affair in 1917. The conspiracy led to criminal conspiracy trials like the Lahore Conspiracy Case trial in India and the Hindu–German Conspiracy Trial in the United States, the latter being the longest and most expensive trial in the country at that date.