Almost certainly suicide, but the mods keep deleting that for some reason, as if doing so is a good idea. Ya know mods, it's not talking about these kinds of things that increases the stigma and leads to more suicide. You might be deleting them because it's "speculation" or the family is still grieving, but frankly we can all figure it out and it's not fair to people who may be struggling. Also, this is an opportunity to have a conversation about this sensitive topic!
Think before you censor!!