Remains of a pressure cooker believed to be used as a bomb that exploded during the Boston Marathon. The container was full of puncturing objects and ball bearings.
Remains of a pressure cooker believed to be used as a bomb that exploded during the Boston Marathon. The container was full of puncturing objects and ball bearings. Zuma Press/MCT
Remains of a pressure cooker believed to be used as a bomb that exploded during the Boston Marathon. The container was full of puncturing objects and ball bearings. Zuma Press/MCT

Web is awash in advice on making bombs, killing people

April 17, 2013 7:46 PM