Ramzi Ahmed Yousef (Urdu: رمزى احمد يوسف; born 27 April 1968) is a Pakistani convicted terrorist who was one of the main perpetrators and mastermind behind the 1993 World Trade Center bombing and the 1994 bombing of Philippine Airlines Flight 434; he was also a co-conspirator in the Bojinka plot. His profession was electrical engineering. In 1995, Yousef was arrested by the Pakistani Inter-Services Intelligence (ISI) and U.S. Diplomatic Security Service in a joint operation at a guest house in I...
