Twenty-three suspected Al-Qaeda members escaped from a Yemen prison in 2006.[1][2][3] The escape is notable because the escapees included several individuals imprisoned for their participation in the USS Cole bombing. Gaber Al-Bana’a was believed to be an American citizen, who traveled to an Afghan training camp with some friends who became known as the Lackawanna Six or Buffalo Six, when they were rounded up as a "sleeper cell".
The prisoners escaped through a 140-metre tunnel.[1]