Prosecution rests in penalty phase of Boston bomber's trial

BOSTON (AP) — The prosecution rested its case today during the penalty phase of Boston Marathon bomber Dzhokhar Tsarnaev's trial after playing a video showing the mother of 8-year-old Martin Richard crouched over him and resting her head on his chest as he lay dying.

"I heard 'please' and 'Martin' being uttered by Denise Richard," said Steve Woolfenden, a man who was lying on the pavement next to Martin and his mother after the second bomb exploded.

"Just pleading with her son," Woolfenden said, as prosecutors played a video that showed Denise Richard leaning over close to her son, then putting her head down on him.

The boy bled to death on the sidewalk.

Woolfenden's left leg had been sheared off. He described frantically trying to get his 3-year-old son, Leo, out of his stroller. As he lay on the pavement, he saw Martin and Denise Richard.

Prosecutors, who rested their case Thursday, will get a chance for rebuttal after the defense presents its case, which is expected to begin Monday.