independent

Friday 25 April 2014

Boston bombs 'trigged remotely'

Boston bomb suspects Tamerlan Tsarnaev, left, and brother Dzhokhar Tsarnaev (AP/The Lowell Sun and Robin Young)

The Boston Marathon explosions which killed three people and injured more than 260 were triggered by a remote-controlled detonator, US officials have said.

They said the bombs were not very sophisticated. One described the detonator as "close-controlled" - meaning it had to be triggered within several blocks of the bombs.

It was not immediately clear what the detonation device was.

A criminal complaint outlining federal charges against the surviving bombing suspect, Dzhokhar Tsarnaev, described him as holding a mobile phone in his hand minutes before the first explosion.

Mobile phones have been used to trigger bombings in war zones.

Press Association

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