This afternoon on "Happening Now," Catherine Herridge reported on a four-page NYPD intelligence assessment that provides new details on Zale Thompson’s self-radicalization in the weeks leading up to his Oct. 23 ax attack on NYPD officers.

A preliminary analysis of 277 recent online search terms by Thompson found multiple references to jihadist materials, foreign terrorist organizations and violent tactics.

Investigators also found 59 search terms focusing on jihad:

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Herridge said the intelligence assessment also reveals that Thompson was interested in targeting the United Nations General Assembly, particularly Saudi dignitaries.

Police released photos of the ax that was used in the attack, plus a second ax and a hunting knife found at Thompson’s home.

In addition to the 277 search terms, Thompson was also a follower of Al Qaeda in Yemen and their online propaganda for nearly a year-and-a-half before the assault.

Watch more above.

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