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At 12:18 p.m., a terrorist bomb explodes in a parking garage of the World Trade Center in New York City, leaving a crater 60 feet wide and causing the collapse of several steel-reinforced concrete floors in the vicinity of the blast. Although the terrorist bomb failed to critically damage the main structure of the skyscrapers, six people were killed and more than 1,000 were injured. The World Trade Center itself suffered more than $500 million in damage. After the attack, authorities evacuated 50,000 people from the buildings, hundreds of whom were suffering from smoke inhalation. The evacuation lasted the whole afternoon. In March 1994, Mohammed Salameh, Ahmad Ajaj, Nidal Ayyad, and Mahmoud Abouhalima were convicted by a federal jury for their role in the bombing, and each was sentenced to life in prison. Salameh, a Palestinian, was arrested when he went to retrieve the $400 deposit he had left for the Ryder rental van used in the attack. Ajaj and Ayyad, who both played a role in the construction of the bomb, were arrested soon after. Abouhalima, who helped buy and mix the explosives, fled to Saudi Arabia but was caught in Egypt two weeks later. The mastermind of the attack--Ramzi Ahmed Yousef--remained at large until February 1995, when he was arrested in Pakistan. He had previously been in the Philippines, and in a computer he left there were found terrorist plans that included a plot to kill Pope John Paul II and a plan to bomb 15 American airliners in 48 hours. His only regret, the agent quoted Yousef saying, was that the 110-story tower did not collapse into its twin as planned. Eyad Ismoil, who drove the Ryder van into the parking garage below the World Trade Center, was captured in Jordan that year and taken back to New York. All the men implicated had ties to Sheik Omar Abdel Rahman, a radical Egyptian religious leader who operated out of Jersey City, New Jersey, located just across the Hudson River from Manhattan.