Ramzi Yousef ( ; born 27 April 1968 ) is a convicted and incarcerated international terrorist who was one of the main perpetrators of the 1993 World Trade Center bombing , the bombing of Philippine Airlines Flight 434 , and was a co-conspirator in the Bojinka plot . In 1995 , he was arrested by the Pakistani Inter-Services Intelligence ( ISI ) and U.S. Diplomatic Security Service at a guest house in Islamabad , Pakistan while trying to set a bomb in a baby doll , then extradited to the United States
Philippine Airlines Flight 434
Philippine Airlines Flight 434
Ramzi Yousef