Washington (CNN) -- P.J. Crowley abruptly resigned Sunday as State Department spokesman over controversial comments he made about the Bradley Manning case.
Sources close to the matter said the resignation, first reported by CNN, came under pressure from the White House, where officials were furious about his suggestion that the Obama administration is mistreating Manning, the Army private who is being held in solitary confinement in Quantico, Virginia, under suspicion that he leaked highly classified State Department cables to the website WikiLeaks.
Speaking to a small group at MIT last week, Crowley was asked about allegations that Manning is being tortured and kicked up a firestorm by answering that what is being done to Manning by Defense Department officials "is ridiculous and counterproductive and stupid."
Crowley did add that "nonetheless, Bradley Manning is in the right place" because of his alleged crimes, according to a blog post by BBC reporter Philippa Thomas, who was present at Crowley's talk.
"The unauthorized disclosure of classified information is a serious crime under U.S. law," Crowley said in a statement Sunday. "My recent comments regarding the conditions of the pre-trial detention of Private First Class Bradley Manning were intended to highlight the broader, even strategic impact of discreet actions undertaken by national security agencies every day and their impact on our global standing and leadership.
"The exercise of power in today's challenging times and relentless media environment must be prudent and consistent with our laws and values," Crowley said. "Given the impact of my remarks, for which I take full responsibility, I have submitted my resignation."
Crowley has told friends that he is deeply concerned that mistreatment of Manning could undermine the legitimate prosecution of the young private. Crowley has also made clear he has the Obama administration's best interests at heart because he thinks any mistreatment of Manning could be damaging around the world to President Obama, who has tried to end the perception that the United States tortures prisoners.
Nevertheless, Crowley's political fate was sealed Friday when Obama was asked at a White House news conference about his comments regarding Manning.