Sufyan Ben Qumu, who was reportedly once Osama bin Laden's driver, is allegedly the leader of the recent attack on the U.S. embassy in Benghazi, Libya, which killed four Americans, including U.S. Ambassador John Christopher Stevens, reports the Daily Mail.
Qumu was held for six years, without trial, at the U.S. military detention center in Guantanamo Bay, Cuba. In 2007, Qumu was released from Guantanamo Bay prison by President Bush and turned over to Gaddafi on the condition that he be kept in prison.
In 2010 Gaddafi freed Qumu from prison in Tripoli, along with 37 other prisoners.
During the uprising that toppled Gaddafi, Qumu emerged as a leader of the rebels.
Qumu had prior military experience fighting against the Soviets in Afghanistan with the Mujaheddin, a group funded and armed by the Reagan administration. Later, he fought against the Northern Alliance and fought alongside the Taliban.