Ramzi Yousef arrived in New York in 1992 and began planning to bomb the World Trade Center with the goal of toppling one tower onto the other. He rented a storage locker to store bomb-making materials and scouted the WTC underground. On February 26, 1993, the attackers parked a van containing 1,200 pounds of explosives in the WTC parking garage and detonated it, killing 6 people and injuring over 1,000. The FBI investigation led to the arrests of Yousef and several co-conspirators who were connected to Sheikh Rahman and convicted of involvement in the bombing.