Mistaken ID? Terrorism Pre-empted?
The raid turned up no explosives. A number of empty backpacks and cell phones were confiscated. The primary "person of interest" says that he did nothing wrong, but it is alleged that he was "schooled in demolitions and military tactics." At the same time, there are questions of whether the NYPD "jumped the gun" on a broader FBI investigation. It seems that one thing is certain, the authorities were paying a great deal of attention to the suspects.
There is probably alot more to this than we now know.