The second murder trial of Karen Read has begun with opening statements addressing theories about how her Boston police officer boyfriend ended up dead

The second murder trial of Karen Read, who is accused of causing the death of her Boston police officer boyfriend, entered Day 2 as witness testimony resumed Wednesday.

In tearful testimony, the mother of a Boston police officer recounted how her son was discovered unresponsive in a snowbank, and disputed comments made about her in media interviews by Karen Read, whom prosecutors accuse of killing the officer.