Abu Bakr Ibn Ali Muhhammad Alahdal is a citizen of Yemen, held in extrajudicial detention in the United States Guantanamo Bay detainment camps, in Cuba. http://www.dod.mil/pubs/foi/detainees/detaineesFOIrelease15May2006.pdf list of prisoners (.pdf), US Department of Defense, May 15 2006 His detainee ID number is 171. American intelligence analysts estimate that Alahdal was born in 1979, in Al Hudaydah, Yemen.