Hmm. As it turns out, drugs were involved.
https://www.yahoo.com/news/charges-f...003158487.html
Summary if you don't click the link: the homeowner and another guy are being charged with involuntary manslaughter for giving cocaine and fentanyl to the three future snowmen. The defense is saying there's no proof that they gave the snowmen the drugs even though they have a past history of doing so.