English to Chinese Tech/Engineering IT (Information Technology) security

The police borrowed a truck and a uniform from the shipping company and had an officer deliver the goods and walk out. Seconds later, uniformed officers poured in and took down the guy who signed for the shipment. But, Pignotti says, he was just a cat's-paw, being paid to pick up a package—a typical tactic used to shield fraudsters from receiving stolen property. "He refused to roll over on the guy paying him," Pignotti says. "[Illinois State Police] continued to investigate. We helped by showing where the e-mail orders originated from. The guy was making the orders from a Kinkos in Chicago. They staked that out and looked through some surveillance tape. They figured out it wasn't always the same Kinkos. They never found the guy masterminding the operation.
试译：
警方向运货公司借了货车和工作服，派一名警官出去送货。很快，身穿制服的一群警官破门而入，逮捕了签收货物的那个人。但Pignotti说，这人只是受雇专门收货的爪牙――骗子们通常使用这招以免亲自收货。Pignotti说：“他拒不交待是谁出钱雇他。伊利诺斯州警察局继续开展调查。我们告诉了警方电子邮件订单来自何处”。对方是从芝加哥的一家快印店下订单的。于是警方把这家书印店监控了起来，并且调出了一盘录像带。结果发现，这不是警方要找的同一家快印店（？？？）。警方根本查不出谁是幕后主施者。