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1. **1993 World Trade Center Bombing**: After a truck bomb detonated in the underground parking garage of the North Tower of the World Trade Center in New York City on February 26, 1993, the FBI led the investigation. The bombing led to six deaths and more than 1,000 injuries. Within days, the FBI identified and arrested four individuals connected to a radical Islamist group. A fifth perpetrator was captured abroad in 1995, and the alleged mastermind behind the attack, Ramzi Yousef, was arrested in Pakistan in 1995 and later extradited to the U.S.