New York subway bombing: Investigators search for clues behind attempted attack

The suspect, Akayed Ullah, set off a homemade pipe bomb early on Dec 11 in an underground passageway between the subway station underneath the Port Authority Bus Terminal and the Times Square subway station in midtown Manhattan.
The suspect, Akayed Ullah, set off a homemade pipe bomb early on Dec 11 in an underground passageway between the subway station underneath the Port Authority Bus Terminal and the Times Square subway station in midtown Manhattan.PHOTO: AFP