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On September 16, 1920 at noon a bomb exploded on Wall Street, in the Financial District of New York City. The blast killed 38 and seriously injured 143.[4]

Investigators of the Wall Street bombing became suspicious of Edwin Fischer as he had apparently predicted the attack with astonishing accuracy. Fischer had been warning his friends of an impending bomb attack on Wall Street, sending them post cards urging them to leave the area before September 16.[5]

He was taken into custody in Hamilton, Canada. On return to New York he was wearing two business suits for warmth and a tennis outfit underneath which he claimed he wore "to be ready for a tennis match at all times".[6] The police questioned him at Bellevue. He said he had received the messages "through the air from God." Realizing Fischer was suffering from a mental disorder and finding that he made a regular habit of issuing such warnings, the police soon released him and had him committed to the Amityville Asylum where he was diagnosed as 'insane but harmless'

https://en.wikipedia.org/wiki/Edwin_P._Fischer