Explosions at Boston Marathon

[Loyal]

Remote detonation is not really a thing usually used. Timer is more reliable for "home made stuff" that's why is more commonly used. And if it fails its more likely to simply not go off instead of exploding at the wrong time, which could happen with remote detonation.

Considering the bombs went off just as people were crossing the finish line in large groups, remote detonation is by far more likely.

Also, wasn't the 3rd bomb not detonated? It was recovered right? If that's the case, it makes it MUCH easier to track down who made it. You can do it out of fragments, but having the full intact explosive makes it a ton easier.

The police did a controlled detonation of the third bomb, and mentioned they might be "blowing up things" throughout the next few hours as of their press conference. I doubt they have intact explosives they can mess with. If they do, they haven't mentioned it.