Authorities will try to determine “If it is an act of terrorism, if this is a terrorist, is he alone wolf?...Are there other cells waiting to be activated?” Former NYPD officer Bill Stanton says

Authorities will try to determine “If it is an act of terrorism, if this is a terrorist, is he alone wolf?...Are there other cells waiting to be activated?” Former NYPD officer Bill Stanton says https://t.co/bM1QNc561o pic.twitter.com/i3ESW3Rvv3

— CBS News (@CBSNews) December 11, 2017