Investigators will look into allegations of prisoner abuse at Guantanamo Bay described in recently released FBI documents, authorities said, as a new batch of FBI memos was released. The U.S. Southern Command in Miami assigned Army Brig. Gen. John T. Furlow to lead the investigation, which could begin as early as this week. The military maintains that most incidents detailed in the FBI memos occurred in 2002 when the prison was just opening, and that some of the interrogation techniques labeled as "aggressive" are no longer in use. Documents published last month show FBI agents warned the government about abuse and mistreatment when the first prisoners arrived, more than a year before a scandal at Iraq's Abu Ghraib prison. One letter, written by a senior U.S. Justice Department official and obtained by The Associated Press, suggested the Pentagon failed to act on the FBI complaints. "It will be fully investigated," Guantanamo's commanding Army Brig. Gen. Jay Hood said Wednesday, adding that recent articles about allegations have skewed the public's understanding about the mission and the troops' commitment to strict standards.