Still, knowing his previous confession to holding a young boy captive in the 1970's, cops smelled a rat and kept Esposito under a virtual microscope, investigators said.

调查人员说，尤其当警察知道他以前曾供认在七十年代时曾劫持一个男童以后，觉得可疑，于是对他展开巨细靡遗的监视。

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New York Police Chief Joseph Esposito said Wednesday that 6, 347 people remain missing from the attacks.

CNN: First families begin filing death certificates

"I think about them all the time, " Chief Esposito said of the incidents.

WSJ: NYPD Losing Its 'Four-Star General'

Two more streets near the World Trade Center complex were scheduled to be opened Thursday morning for the first time since the attacks, Esposito said.

CNN: First families begin filing death certificates