• SHARE

The bombs that tore through a crowd of spectators at the Boston Marathon could have cost as little as $100 to build and were made of the most ordinary ingredients — so ordinary, in fact, that investigators could face a gargantuan challenge in attempting to use bomb forensics to find the culprit.

Investigators revealed Tuesday that fragments recovered at the blast scene suggest a simple design: a common pressure cooker of the kind found at most discount stores, packed with an explosive and armed with a simple detonator. A final ingredient — a few handfuls of BBs, nails and pellets — helped ensure widespread casualties when the two devices exploded Monday near the race’s finish line, law enforcement officials said.

Unable to view this article?

This could be due to a conflict with your ad-blocking or security software.

Please add japantimes.co.jp and piano.io to your list of allowed sites.

If this does not resolve the issue or you are unable to add the domains to your allowlist, please see out this support page.

We humbly apologize for the inconvenience.

In a time of both misinformation and too much information, quality journalism is more crucial than ever.
By subscribing, you can help us get the story right.

SUBSCRIBE NOW

PHOTO GALLERY (CLICK TO ENLARGE)