Mustafa al-Hawsawi was captured in Pakistan by Pakistani agents in March 2003 and was transferred to the custody of the United States. He was held in secret CIA black sites until September 2006, when he was transferred to Guantánamo Bay and U.S. officials finally acknowledged his imprisonment. It detained him at the Salt Pit, a secret black site in Afghanistan. It was reported in August 2010 that, after months of interrogation, the CIA transferred al-Hawsawi and three other high-value detainees to Guantanamo Bay detention camp on September 24, 2003, for indefinite detention. Fearing that "Rasul v. Bush", a pending Supreme Court case about detainees' habeas corpus rights, might result in having to provide the men with access to counsel, the CIA took back custody on March 27, 2004, and transported the four men to one of their black sites.