2016 Nissan Rogue seat belts problems

Tl* the contact called on behalf of his parents who owned a 2016 nissan rogue. While driving approximately 30 MPH, the contact's father suffered a diabetic seizure. As a result, he crossed over the median and crashed into a tree. The contact stated that neither of his parents were wearing their seat belts at the time of the crash. Both parents were transported to the hospital via ambulance and were pronounced deceased 36 hours later. Police report number: 2019-3451 was filed.

Seat belt - back driver side seat belt would not fasten. The metal portion of the belt would not "click" into the seat piece. Purchased the vehicle less than 30 days ago from carmax, so it is covered by their 30-day warranty. Have an appointment to have this issue reviewed and resolved at the end of this month.