Jury hears boy, 7, describe how mother attacked him and his brother

Story here. Excerpt:

'(CNN) -- A mother's plot to blame a stranger for killing her sons went awry when one of the boys survived and told police how Michelle Kehoe cut his throat, then moved on to his younger brother, an Iowa prosecutor said Thursday.

Police found the 7-year-old covered in dried blood in the family van the morning of October 27, 2008, in a secluded area near a pond east of Littleton. Beside the van, his 2-year-old brother lay dead, his throat also slashed.

"She cut me," the boy said in a high-pitched voice in an audio recording that was played Thursday in Kehoe's first-degree murder trial.

Kehoe, of Coralville, Iowa, has pleaded not guilty to charges of first-degree murder, attempted murder and child endangerment causing serious injury. Before the trial, her lawyers filed a notice of intent to present an insanity defense, according to court records.'