Among the organizations concerned is Save the Children, the biggest foreign-aid agency in Pakistan. According to the New York Times, Afridi told Pakistani authorities he was first contacted by the CIA through Save the Children, a claim that the organization denies. The Times reported that, after Afridi’s arrest last July, the NGO’s staff had been monitored by Pakistani intelligence and shipment of its medical supplies had been held at the border. A spokesman said Tuesday that the group hasn’t had any problems in recent months.  The potential danger for health workers was outlined in a Feb. 21 letter to CIA Director David Petraeus from Samuel A. Worthington, the president of an alliance of 200 NGOs that operate abroad. He warned: “Since reports of the CIA campaign first surfaced last summer, we have seen a continued erosion of U.S. NGOs’ ability to deliver critical humanitarian programs in Pakistan as well as an uptick in targeted violence against humanitarian workers. I fear the CIA’s activities in Pakistan and the perception that U.S. NGOs have ties with intelligence efforts may have contributed to these alarming developments.”  CIA spokesman Preston Golson, queried for this article, said he couldn’t comment on “any possible operational activity.” But he noted: “The agency is receptive to the views of the NGO community, and met with community representatives for a full and frank exchange on their concerns.”"