Based on investigative leads and information provided by Dzhokhar Tsarnaev, investigators believe that each of the brothers had their own remote control device to detonate bombs near the marathon's finish line, said a law enforcement official with knowledge of the investigation on Friday.
The court has previously heard that the device in the Jeep failed to detonate.
The device failed to fully detonate, instead setting off a fire at the man's seat.
But the device he used failed to detonate fully, instead setting off the fire, authorities said.
Appearing on the ABC program "This Week" and the NBC program "Meet the Press, " Gibbs said Obama is receiving regular briefings by his national security staff on the incident in which a suspect allegedly tried to detonate an explosive device on a Northwest Airlines flight from Amsterdam, The Netherlands, making its final approach to Detroit, Michigan.
The device failed to fully detonate, instead setting off a fire at his seat.
The brothers used a remote control device similar those used to control toy cars to detonate the two bombs in Boston, Rep. Dutch Ruppersberger, a Maryland Democrat and member of the House Select Committee on Intelligence, said Wednesday.
CNN: Father of Boston bomb suspects to fly from Russia to U.S.
The brothers used a remote control device similar to those used to guide toy cars to detonate the two bombs in Boston, said Rep. Dutch Ruppersberger, a Maryland Democrat and member of the House Select Committee on Intelligence.
The country's two previous tests have both involved plutonium devices, but some analysts say the threat of "high-level" testing could also indicate the North intends to detonate its first nuclear device made with highly-enriched uranium.
BBC: S Korea leader warns of 'multiple' N Korea nuclear tests
The device was loaded into a stolen car and left outside the PSNI station where it failed to detonate on 3 April, 2010.
Security Council on Jan. 22 penalized North Korea for the launches, Pyongyang responded with threats to detonate a nuclear device.
New York police said on Thursday the Tsarnaev brothers had concocted a spur-of-the-moment plan to drive the hijacked car to Times Square and detonate their remaining explosives: a pressure cooker device and five pipe bombs.
The parts found also include a partial circuit board, which would be used to detonate a device.
Of course, these sentiments were expressed by test-ban advocates in the executive and legislative branches before there was evidence that China was preparing to detonate a nuclear device.
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