Authorities say Sayfullo Saipov, the man responsible for Tuesday's deadly truck attack in Manhattan, planned the attack for weeks, and left behind a note in his rental truck declaring his support for the Islamic State.
John Miller, deputy commissioner of the NYPD, said the letter, written in Arabic, stated that ISIS will "endure forever." Miller said investigators are still working to reconstruct the suspect's actions over the last few weeks as he prepared for the attack.
New York Gov. Andrew Cuomo described the incident as a "classic case of a radicalization of a domestic jihadist who associated with ISIS," telling CBS on Wednesday that "the best evidence we have is that he was a 'lone wolf.'"
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