Elder brother dead, younger captured.

http://www.bbc.co.uk/news/world-us-canada-22228151

Not surprising that someone will declare that it is some government conspiracy that involves framing two young men...

I won't be so quick to declare that the threat is over. There is no telling whether there are more like minded people involved. I think the forensics work will be crucial in reconstructing how the pair obtained the materials for the bomb, and if external assistance was required for it.