The accused 9/11 mastermind's case remains in limbo after an appeals court this week scrapped a plea deal that the government had negotiated but later withdrew.

The decision by a panel of the federal appeals court in Washington, D.C., undoes an attempt to wrap up more than two decades of military prosecution beset by legal and logistical troubles.

The D.C. Circuit Court of Appeals concluded that the plea agreements agreed to by a Pentagon official overseeing military commission proceedings against Khalid Sheikh Mohammed, Wa