The alleged terror plot to bomb commuter trains in New York City was intended to go down on the anniversary of the Sept. 11 attacks, a U.S. prosecutor reported Friday. "The defendant was in the throes of making a bomb and attempting to perfect his formulation," prosecutor Tim Neff told a federal judge in Denver. The defendant, Najibullah Zazi, a 24-year-old Afghan immigrant, has been indicted on terror charges and faces a possible life sentence. Though he denies the allegations, he is likely to be transferred from Denver to New York. Prosecutors allege that Zazi had accomplices, trained with al Qaeda, and purchased “unusually large quantities” of hydrogen peroxide and nail-polish remover to construct bombs.