One Explosive Device At Boston Marathon Was Stuffed Into A Pressure Cooker

Boston Marathon Explosion

A few details about the bombs that exploded during the Boston Marathon on Monday are starting to emerge.

Here’s what we know so far about the two bombs that killed three and injured 100 more people:

The two bombs were reportedly stuffed into trash cans, so the explosives had to be simple, small, and powerful.

The vice president of intelligence company Stratfor had this to say:

The LA Times quotes officials as saying that the explosives were not made of plastic, which would caused a much greater shock wave. 

The were also several reports of ball bearings zipping around, peppering victims.

Again, this is a common tactic with suicide and smaller bomb varieties, to duct tape or otherwise affix bags of screws and ball bearings to the outside of the explosive.

There are other ways to achieve the type of shrapnel needed to hurt and maim victims:

Also, authorities are saying at least one of the bombs “likely” had a timing device attached:

On the other hand, authorities have told ABC that the bombs could have also been remotely detonated, possibly via cell phone. Using this method, a bomber would attach a mobile phone to the bomb’s circuitry so the bomber would just have to dial a number to ultimately set it off.

NOW WATCH: Briefing videos

Business Insider Emails & Alerts

Site highlights each day to your inbox.

Follow Business Insider Australia on Facebook, Twitter, LinkedIn, and Instagram.