As his time in the White House winds down, President Barack Obama received an unusual piece of mail: a letter from accused 9/11 mastermind Khalid Sheikh Mohammed. 
 
 Officials confirmed that the letter arrived at the White House to CBS News, but are declining to provide further details. 
 
 Mohammed is awaiting his death-penalty trial at Guantanamo Bay, accused of planning and orchestrating the attacks that killed nearly 3,000 people in New York, at the Pentagon, and in Pennsylvania on September 11, 2001. 
 
 The Miami Herald, which first reported on the letter, says it was written in 2014, and was only delivered after a judge ordered reluctant Guantanamo Bay prison officials to put it in the mail. 
 
 The Herald reports that because it was delivered before Donald Trump takes office on Friday, Mr. Obama should be able to take it with him into private life. 
 
 The Herald reports Mohammed “wrote to Obama in 2014 about ‘Muslim oppression at the hands of the West in general and the United States in particular,’ his lawyer David Nevin said then. He also shares his views on what happened in Iraq during the period of U.S. sanctions and ‘events in Palestine and Gaza over the years.’” 
 
 The Pentagon’s chief war crimes prosecutor, Army Brig. Gen. Mark Martins, reportedly did not want the letter delivered, saying it amounted to propaganda. 
 
 Mohammed has been described previously by observers as something of an attention junkie. He has asked to wear military camouflage in court, saved berries from his meals to dye his beard orange, and flipped through magazines while being spoken to by a judge. 
 
 Before being taken to Guantanamo Bay following his 2003 capture in his pajamas in a suburban Pakistan home, Mohammed was subjected to the most brutal of the CIA’s harsh interrogation methods, and he reportedly confessed to a host of atrocities. ||||| Khalid Sheik Mohammed's attorney discusses the letter the alleged 9/11 mastermind wrote Obama 
 
 In an Aug. 14, 2014 news conference at the U.S. Navy base at Guantánamo Bay, Cuba, Khalid Sheik Mohammed's attorney, David Nevin, discusses the letter that Mohammed sent to President Obama.
– One of the final letters Barack Obama will receive during his time as president comes from the man who allegedly planned the Sept. 11 attacks, the Miami Herald reports. According to CBS News, Khalid Sheikh Mohammed was captured in 2003 in Pakistan, tortured by the CIA, then moved to Guantanamo Bay, where he's currently awaiting trial. In 2014, Mohammed wrote a letter to Obama, addressing "Muslim oppression at the hands of" the US and the West, plus events in Gaza, Iraq, and Palestine. But the prison at Guantanamo refused to deliver it. The judge in Mohammed's case finally ordered the letter delivered earlier this month. He ruled Obama should have the letter before becoming a private citizen. While a White House source confirms the letter has been delivered, it's unclear whether or not Obama has read it. The Pentagon's chief war crimes prosecutor remained opposed to the release of the letter, which he calls propaganda. Mohammed has, in the past, been described as having a deep desire for attention.