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.

DEDHAM, Mass. -- The second murder trial of Karen Read, whose case has sparked a national debate on police accountability and won her legions of devoted fans, will begin Tuesday with both sides laying out conflicting theories of how her Boston police officer boyfriend ended up dead.

Karen Read is accused of hitting her boyfriend, a Boston police officer, and leaving him for dead in 2022. Defense attorneys say she was framed.