Meantime, other news outlets have updated their story
Port Authority of New York and New Jersey spokeswoman Cheryl Albiez says authorities determined the man needed the cane for mobility and didn't arrest him. They gave him a different cane from the lost and found and returned the one with the ice pick to his wife.
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http://www.nj.com/news/index.ssf/2015/12/nj_man_tried_to_bring_deadly_looking_hidden_ice_pi.html