U.S.A. Car Bomb World Trade Center 26th February, 1993 : A car bomb which exploded in an underground garage at the World Trade Center shook the 110 story towers causing the collapse of several floors in the underground garage and tearing a hole in the ceiling of an adjoining subway leaving six people dead and injuring a further 100. It is thought Islamic extremists are responsible. In May 1994, four men - Mohammed Salameh, Nidal Ayyad, Mahmud Abouhalima and Ahmad Ajaj - were sentenced to life for bombing the World Trade Center, which killed six people and injured 100.