Yousef 's maternal uncle is Khalid Sheikh Mohammed , with whom he allegedly planned the Bojinka plot . Mohammed is a senior al-Qaeda member accused of being the principal architect of the September 11 attacks in 2001 . Yousef is serving his life sentences at ADX Florence , located near Florence , Colorado . He shares a cell block that is commonly referred to as " Bombers Row " with Terry Nichols , Eric Rudolph , and Ted Kaczynski
September 11 attacks
September 11 attacks
Ramzi Yousef