(Melbourne Herald-Sun) The remaining suspect in the Boston Marathon bombings has recovered enough to walk and assured his parents in a phone conversation that he and his slain brother were innocent, their mother told The Associated Press.

Meanwhile, the father of a Chechen immigrant killed in Florida while being interrogated by the FBI about his ties to the slain brother Tamerlan Tsarnaev, maintained that the US agents killed his son “execution-style”.

Dzhokhar Tsarnaev, 19, walked without a wheelchair to speak to his mother last week for the first and only phone conversation they have had since he has been in custody, his mother Zubeidat Tsarnaeva told the AP.

In a rare glimpse at Dzhokhar Tsarnaev’s state of mind, he told her he was getting better and that he had a very good doctor, but was struggling to understand what happened, she said.

“He didn’t hold back his emotions either, as if he were screaming to the whole world: What is this? What’s happening?,” she said.

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