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Office workers stand outside Two World Financial Center after it was briefly evacuated in New York, Thursday, April 12, 2012. Authorities say an evacuation was ordered as a precaution at a World Financial Center building after a security guard reported a package that seemed suspicious. (AP Photo/Seth Wenig)

Fake grenade sparks NYC building evacuation

Authorities say a novelty grenade was to blame for an evacuation at a building near New York's ground zero. The police bomb squad was called to 2 World Financial Center in Lower Manhattan at midday Apr. 12 when a security guard reported a package that seemed suspicious.