...has officially called it a bombing attempt and Commissioner Ray Kelly said that an improvised bomb was dismantled by law enforcement. It sounds to me like an amatueurish attempt but even at that, had this gone off there probably would have been lots of deaths, injuries and damage.
This is one of the most video covered locations in the USA so chances are they will spot the culprits on camera and catch them quickly. Let us hope so.
All the best,