Sandra Layne Case: Jury continues deliberations in Mich. grandmother's murder trial

(AP) PONTIAC, Mich. - Jurors in suburban Detroit have been given a computer so they can listen again to a critical 911 call as they deliberate in the trial of 75-year-old Sandra Layne, who shot and killed her teenage grandson.

PICTURES: Grandma accused of grandson's murder

The jury must decide whether to convict Layne of first-degree murder or a lesser charge, or acquit her on the basis of self-defense. The first full day of deliberations began Tuesday in Oakland County, north of Detroit.

Prosecutor Paul Walton says there was nothing defensive about Layne's treatment of 17-year-old Jonathan Hoffman. He was shot six times last spring at their home in West Bloomfield Township, even while pleading for help during a 911 call.

Layne's attorney says she feared her grandson and felt overwhelmed by his drug use and choice of friends.

Complete Coverage of Sandra Layne on Crimesider