A lawyer for the alleged "20th hijacker" says the Saudi tried to kill himself at Guantanamo last month after learning he faced a possible death sentence.
The lawyer says Mohammed al-Qahtani cut himself repeatedly and had to be hospitalized.
Attorney Gitanjali Gutierrez said Tuesday that al-Qahtani was upset to learn he faced murder and war crimes charges in the Sept. 11 attacks. The Pentagon later dropped the charges without saying why.
The US has said he had tried to join the 9/11 hijackers, but couldn't get into the country.
Gutierrez was not able to reveal the information until now because of security rules.
The Pentagon did not immediately respond to a request for comment.
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