On 1 January 2021, around 10:00 CET, in the village of Tribistovo, near the town of Posušje, Bosnia and Herzegovina, eight teenagers – four boys and four girls – of Herzegovinian Croat ethnicity were found dead in a holiday cottage after a New Year's Eve celebration. The cause of death was determined as suffocation from carbon monoxide poisoning, instigated by a power generator used to heat the cottage.