Brothers planning further attacks 
say police

Ed Davis, Boston’s police commissioner, told a US TV show that evidence found at the scene of a shoot-out with police suggested they were going to attack others.

“We have reason to believe, based upon the evidence that was found at that scene – the explosions, the explosive ordnance that was unexploded and the firepower that they had – that they were going to attack other individuals.”

It has also emerged that surveillance video from the Boston Marathon shows one suspect dropping his backpack and then walking away.

Massachusetts Governor Deval Patrick said the video clearly showed Dzhokhar Tsarnaev, 19, at the scene of the bombings.

The Governor told NBC: “It does seem to be pretty clear that this suspect took the backpack off, put it down, did not react when the first explosion went off and then moved away from the backpack in time for the second explosion.

“It’s pretty clear about his involvement and pretty chilling, frankly.”

Tsarnaev was captured on Friday after being pulled injured from boat in a Boston backyard following an unprecedented manhunt. He is being guarded by armed officers while he recovers at a Boston hospital but is in a serious condition and hasn’t been able to communicate with investigators.

His 26-year-old brother and alleged accomplice, Tamerlan, died earlier on Friday after a gun battle with police.

Investigators have not offered a motive for the Boston attack. But in interviews with officials and those who knew the Tsarnaevs, a picture has emerged of the older one as someone embittered
toward the US, increasingly vehement in his Muslim faith and
influential over his younger brother.

The Russian FSB intelligence service told the FBI in 2011 about information that Tamerlan Tsarnaev was a follower of radical Islam, two law enforcement officials said on Saturday.