wnbc's jonathan dienst has details. >> reporter: this is the face of suspected bomber quazi mohammad nafis, and this was his alleged target, the federal reserve bank. he was arrested after he allegedly parked a van packed with what he thought was 1,000 pounds of explosives, trying to kill hundreds of innocent new yorkers during the morning rush. >> he clearly had the intent of creating mayhem here. >> reporter: it was a sting operation and nafis was under intense surveillance for months by the fbi, nypd, and homeland security agents. the undercovers even provided some of the fake bomb parts. but they say it was nafis who picked his target, helped build the bomb, and they only got on to him after he approached an informant about wanting to carry out a major attack. "targeting america's economy is the most efficient way to draw the path of obliteration to america," he allegedly said. officials say his initial plot was supposed to be a suicide mission to bomb the new york stock exchange but tight security there had him change his target to the new york fed. last week, investigators say