A slightly charred and singed underpants with the explosive packet removed from the crotch is seen in government photos obtained exclusively by ABC News, released to Reuters, Dec. 28, 2009.[Xinhua/Reuters Photo]

 The syringe detonator is seen in government photos obtained exclusively by ABC News, released to Reuters, Dec. 28, 2009.[Xinhua/Reuters Photo]

 The package of the PETN explosive powder is seen in government photos obtained exclusively by ABC News, released to Reuters, Dec. 28, 2009.[Xinhua/Reuters Photo]