ISLAMABAD - A serious row has erupted between Ministry of Foreign Affairs and the countrys security agencies over the return of Craig Davis, a Peshawar-based US citizen, believed to be an ex-mercenary of Blackwater, TheNation reliably learnt on Wednesday. According to sources, Craig Davis, who was found involved in illegal activities in Peshawar last month and eventually left Pakistan, has returned again and resumed his mysterious job raising eyebrows of many, including the countrys spy agencies. When Foreign Office spokesman was contacted in this regard, he was not available for comments. The sources said that Davis is associated with Creative Associates International, Inc, a Washington based firm operating out from Peshawar, which is suspected to be a wing of the US private security agency, the Blackwater, headed by the US former vice president Dick Cheney. The sources said that return of Craig Davis was made possible following series of negotiations between Pakistans Foreign Office and the US State Department, thus, causing ripples in Pakistans security agencies. Craig Davis, who has been accused to be holding secret meetings with Taliban, an act of breaching Pakistans sovereignty, is using a leased house, CAII, in Peshawar. The sources further said that a few weeks before the security agencies checked and found him involved in illegal activities, a group of the concerned Pakistani citizens in Peshawar wrote to the Federal Interior Ministry to complain about the suspicious activities of a group of shadowy Americans in a rented house in their neighbourhood.