Bombs filled with shrapnel give clues into New York explosions

NEW YORK — A bomb that injured 29 people Saturday in the Chelsea neighborhood of Manhattan, and another that failed to detonate, were filled with shrapnel and made with pressure cookers, flip phones and Christmas lights that set off a powerful explosive compound, law enforcement officials said Sunday.

Both bombs appeared designed to create maximum chaos and fatalities — they also provided a trove of clues even as any suspects remained unnervingly at large.

A top law enforcement official said pressure cookers were filled with “fragmentation materials.” The bomb that exploded was filled with small bearings or metal BBs. A second device that did not explode appeared to be filled with the same material, the official said.

http://www.startribune.com/bombs-filled-with-shrapnel-give-clues-into-new-york-explosions/393923191/