Autopsy for mother, young son found dead in December reveals new, disturbing details

It remains unclear if the boy died before or after his mother shot himself. Police are looking to speak to anyone who had contact with the mother or child during the week before their bodies were found

Authorities in New Hampshire have released the results of autopsies performed on a mother and her young son who died of an apparent murder-suicide in December.

As CrimeOnline previously reported, Mercedes Tremblay, 25, and her 2-year-old son Mason Tremblay were found dead mid-December at their home in Manchester. Authorities initially reported that Mercedes died of an apparent self-inflicted gunshot wound, but did not comment on the toddler’s cause of death.

The Londonderry Patch reports that a medical examiner completed an autopsy on the little boy, determining that he died of asphyxiation and malnutrition. The details are grim: The boy’s body was reportedly found pinned between a closet door and a doorframe, with the scene strongly suggesting that he died trying to get out of the closet. Bedroom furniture was reportedly pushed up against the closet door, making it impossible for the boy to fully open the door.  The specific cause of death was compressional asphyxia due to being pinned, with malnutrition as a contributing factor.

The medical examiner found that Mercedes died of a single self-inflicted gunshot to the head.

The report does not indicate whether Mercedes is believed to have died before or after her son. The investigation is ongoing, and Manchester Police could not be immediately reached for comment.

As the Patch report notes, police have asked anyone who was in contact with either Mercedes or Mason between December 6, 2020, and December 14, 2020 to call the  Manchester Police Department Detective Unit at 603-668-8711.