Prosecutors aim to restrict Karen Read's defense in her retrial for the murder of her boyfriend, Boston police officer John O'Keefe.

Prosecutors are seeking to limit Karen Read's defense claims in her upcoming murder retrial, where she is accused of killing her boyfriend, Boston police officer John O'Keefe. The prosecution wants to prevent the defense from blaming other individuals or a dog during the opening statements, focusing instead on whether Read hit O'Keefe with her SUV and left him to die in a snowstorm. The trial is set to begin next week.