Two decades after U.S. authorities locked Khalid Sheikh Mohammed away at a military detention center in Cuba, the purported mastermind of the Sept. 11 attacks sometimes seems barely any closer to being put on trial than the day he arrived.

A U.S. military judge has set a summer 2028 trial date for Khalid Sheikh Mohammed and three others accused of plotting the Sept. 11, 2001, attacks.

A divided federal appeals court has thrown out an agreement that would've allowed accused Sept. 11 mastermind Khalid Sheikh Mohammed to plead guilty in a deal sparing him the risk of execution for al-Qaida’s 2001 attacks.

Newly unsealed documents give one of the most detailed views yet of the evidence gathered on the accused 9/11 mastermind Khalid Sheikh Mohammed, including how prosecutors allege he and others interacted with the hijackers who carried out the Sept. 11, 2001 attacks.

Sept. 11 survivors and victims’ relatives have mixed feelings about a planned plea deal for accused 9/11 mastermind Khalid Sheikh Mohammed.

The Biden administration has succeeded in temporarily blocking accused 9/11 mastermind Khalid Sheikh Mohammed from entering a guilty plea that would spare him the risk of execution for al-Qaida’s Sept. 11, 2001, attacks.

The Biden administration has asked a federal appeals court to block a plea agreement for accused 9/11 mastermind Khalid Sheikh Mohammed that would spare him the risk of the death penalty.

A military appeals court has ruled against Defense Secretary Lloyd Austin's effort to throw out the plea deals reached for Khalid Sheikh Mohammed and two other defendants in the 9/11 attacks.

The U.S. military judge at Guantanamo Bay, Cuba, has scheduled hearings in early January for alleged 9/11 mastermind Khalid Sheikh Mohammed and two co-defendants to enter guilty pleas in exchange for life sentences.

A defense official says the Defense Department will appeal a military judge’s ruling that plea agreements struck by the alleged mastermind of the Sept. 11, 2001, attacks, and two of his co-defendants are valid.

A lawyer for news organizations has urged the U.S. military commission at Guantanamo Bay to unseal the plea deal struck with accused 9/11 mastermind Khalid Sheikh Mohammed and two others.

A Defense Department disagreement over how to bring to justice the accused mastermind of the 9/11 attacks and four others has thrown the cases into disarray.

Military-run hearings for accused Sept. 11 mastermind Khalid Sheikh Mohammed and two co-defendants at Guantanamo Bay, Cuba, are in upheaval following Defense Secretary Lloyd Austin’s decision to throw out a plea agreement.

Defense Secretary Lloyd Austin has overridden a plea agreement reached earlier this week for the accused mastermind of the Sept. 11, 2001, attacks and two other defendants, reinstating them as death penalty cases.

The man accused of being the main plotter in al-Qaida’s Sept. 11, 2001, attacks has agreed to plead guilty.

Nearly two decades after his capture in Pakistan, the self-described mastermind of the Sept. 11 terror attacks is still in a legal limbo.

A judge and lawyers in the case against the only person ever convicted in a U.S. court in connection with the Sept. 11 attacks recalled the difficulties in bringing that case to trial.

In the last year, four men implicated in the 1993 bombing have won reductions to their sentences after one part of their convictions was dropped to be consistent with a recent U.S. Supreme Court ruling. Nidal Ayyad, 53, Mohammad A. Salameh, 53, and Mahmud Abouhalima, 61, could be freed if they each live to be 100. AdThe bombers who had their sentences reduced were arrested in the intense FBI probe that followed the blast. In a 2012 memorandum, Duffy called Yousef “a cold-blooded killer, completely devoid of conscience.”AdIn a second trial, he was convicted as the mastermind of the 1993 bombing. Eyad Ismoil, 49, also convicted in the 1993 attack, is serving a 210-year sentence.

But the Supreme Court will rule on that next week, Siddiqi said. “Today the court admitted the appeal and next week it will decide if Sheikh stays in jail” until the appeal is decided. The acquittal stunned the U.S. government, Pearl's family and journalism advocacy groups. The U.S. State Department said in a statement that it is watching the case closely and “stands with the Pearl family during this arduous and painfull process." The Pearl family launched a foundation in Daniel's name following the killing, said his father.

ALEXANDRIA, Va. The only man ever convicted in a U.S. court for a role in the Sept. 11 attacks now says he is renouncing terrorism, al-Qaida and the Islamic State. In a handwritten court motion Moussaoui filed with the federal court in Alexandria last month, Moussaoui wrote, I denounce, repudiate Usama bin Laden as a useful idiot of the CIA/Saudi. At his final sentencing hearing, he told the judge God save Osama bin Laden you will never get him." Bin Laden was killed in a raid by U.S. forces on a compound in Pakistan in 2011. In particular, he says he wants either Rudy Giuliani or Alan Dershowitz to represent him as a lawyer, so he can testify in a civil trial filed by victims of the Sept. 11 attacks.