The New York Police Department collected intelligence on more than 250 mosques and Muslim student groups in and around New York City, often using undercover officers and informants to canvas the Islamic population of America's largest city.
That's according to officials and confidential, internal documents obtained by The Associated Press.
The documents, many marked "secret," highlight how the past decade's hunt for terrorists also put huge numbers of innocent people under scrutiny as they went about their daily lives in mosques, businesses and social groups.
An AP investigation last month revealed that a secret squad known as the Demographics Unit sent teams of undercover officers to help key tabs on the area's Muslim communities. The recent documents are the first to quantify that effort.
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