and smashed doors and windows. They eventually took over a wing of the prison and held it for a few days. The riot finally ended on the first of March. On 16 March 2008, after a two-week dispute over arrests following an attempted jail-break, inmates rioted and took over sections of the building. Gunfire was heard in the complex and inmates claimed to be holding hostage two members of the Afghan National Army (ANA). The hostage-takers threatened to kill the ANA members unless mediators were sent in to resolve the conflict. Renovation and expansion The prison has been renovated in recent years with assistance from the United States, including the United States Army Corps of Engineers. In 2007, the U.S. military began transferring some of its detainees from Bagram Air Base in Afghanistan to the Pul-e-Charkhi prison. By January 2008, as many as 125 detainees from the Parwan Detention Facility and 32 detainees from the U.S. Guantanamo Bay detention camp had been transferred to Pul-e-Charkhi. This was followed by the transfer of some 250 more detainees. The United States repeatedly announced that it will be shutting down its Guantanamo Bay detention camps, in Cuba. The Americans planned to transfer most of the captives held in extrajudicial detention in Guantanamo, and in its less well known Parwan Detention Facility to Afghan custody. The initial plan called for reducing the maximum number of men held per cell from the current eight, to just two. For security reasons every cell would be equipped with its own toilet, replacing the current insecure method of letting all the captives leave their cells and share a single toilet at the end of each cell-block. Under this initial plan, the modernization of this wing cost $20 million, and would have a maximum capacity of 670 captives. However, after a tour of the facility, during its modernization, it was realized that, for cultural reasons, captives could not be expected to share a toilet with another man. Afghan cultural modesty would not allow a captive to use a toilet with another man present, cutting the capacity of the modernized facility in half. On May 6, 2007, two American soldiers, Colonel James W. Harrison Jr. and Master Sergeant Wilberto Sabalu, part of the oversight team, were shot dead by one of the Afghan guards. This forced a delay on construction as all the guards underwent new security checks. Finally, there