Brian Laundrie died as a result of a self-inflicted gunshot wound to the head -- this according to the family attorney.
TMZ spoke with Steve Bertolino, who says both of Laundrie's parents have been informed the cause of death was suicide. He tells us both parents are still mourning the loss of their son, and "hope these findings bring closure to both families."
Remember, Brian's remains were in such a state that a medical examiner could not easily determine how exactly he'd died -- and this anthropology examination was commissioned to get to the bottom of it. One part of his remains that were intact enough were his teeth ... that's how they ultimately discovered this was, indeed, Brian -- with matching dental records.
Fox 13 Tampa Bay
This seems to finally close the book on this whole saga ... at least partially, anyway. We now know how exactly Brian and Gabby Petito died ... of course, we still don't know what happened in the middle -- namely, who killed Gabby ... and what Brian's role in that was.
As we reported ... Brian returned to Florida from a cross-country trip he'd gone on with his fiancee, but he came back by himself -- with no Gabby in sight. Shortly after touching down in North Port again and seeing his parents ... Brian himself disappeared without a trace.
There was a nationwide manhunt for him that carried on for weeks and weeks -- with different would-be sightings springing up all over the place.
In the end, the guy was literally in his own backyard (metaphorically) ... and the FBI said the reason they hadn't found him earlier is that the area he ended up being in was underwater for a majority of their initial search.
Moab Police Department
Many suspected Brian's parents had perhaps been helping him or not being truthful in what they knew -- something they always denied -- and as of now, it's unclear if any charges will be brought against them.