John Philip Walker Lindh (born February 9, 1981) is an American who was captured as an enemy combatant during the United States' invasion of Afghanistan in November 2001. He was captured and detained at Qala-i-Jangi fortress, used as a prison. He denied participating in the Battle of Qala-i-Jangi, a violent uprising of the Taliban prisoners, during which all but 86 of the estimated 300–500 prisoners were killed, along with CIA officer Johnny "Mike" Spann. Brought to trial in United States federal court in February 2002, Lindh accepted a plea bargain; he pleaded guilty to two charges and was sentenced to 20 years in prison. He was released on supervision on May 23, 2019, for a three-year period of supervised release.