Canadian-born Omar Khadr has pleaded guilty to the five charges against him, including murder and supporting terrorism, as part of a plea deal with prosecutors at the U.S. military commission at Guantanamo Bay, Cuba.

The 24-year-old had earlier maintained he would never confess to throwing the grenade that killed a U.S. soldier in Afghanistan in July 2002. U.S. officials allege he did so after an attack by U.S. forces on a suspected al-Qaeda compound. Sgt. Christopher Speer was killed and another soldier was wounded.

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