On February 26, 1993, at 12:18 p.m., a small cell of terrorists, with links to a local radical mosque and broader Islamist terror networks, detonated approximately 1,200 pounds of explosives in a rental van in the underground parking garage at the World Trade Center. The explosion created a five-story, 150-feet-wide crater, filled with 4,000 tons of rubble, in the sub-grade levels of the towers and undermined the floor of an adjoining hotel.