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.

[2] The same day the bodies were discovered, several hundreds of citizens of Posušje gathered on the Croatian Veterans Square in the town to light candles and pay homage to the victims.

[14] The Croat member of the Presidency of Bosnia and Herzegovina, Željko Komšić, sent a telegraph, stating: "We were shaken by this sad news about the death of young people, which makes the tragedy even more painful.

"[15][5] The Bosniak member of the Presidency of Bosnia and Herzegovina, Šefik Džaferović, stated: "I was deeply shaken by the news about the great tragedy near Posušje and the death of eight young people.

Vice-chairman of the House of Representatives of Bosnia and Herzegovina, Denis Zvizdić, sent another telegraph, saying: "I was heavily shaken by the awful tragedy that happened on the first day of the new year, in which eight young people passed away.

I express sincere condolences to the families of deceased young men and women and I pray to God that He gives them persistence and strength after their great loss.

"[17] Prime Minister of the Federation of Bosnia and Herzegovina, Fadil Novalić, sent a telegraph, stating: "With great sadness, we received the news about the awful tragedy in which eight young people in Posušje lost their lives.

"[19] The Serb member of the Presidency of Bosnia and Herzegovina, Milorad Dodik, sent a telegraph to the families of the victims, saying: "I received the news about the great tragedy that happened to you with sadness.

Chairman of the Council of Ministers of Bosnia and Herzegovina, Zoran Tegeltija, sent a telegraph to the families of the victims, saying: "In great sadness, I received the news about the loss of young lives in an accident during the New Year's Eve night in Posušje.

President of Republika Srpska, Željka Cvijanović, sent another telegraph, saying: "In sadness and grief, I received the news about the loss of young lives who had future ahead of themselves.

I am extremely shaken by that event and encouraged to express my sincerest Christian condolences and human solidarity to the grieving families, as well as the entire community of believers from where the deceased come from.

"[21] Mufti of Mostar, Salem Effendi Dedović, sent a letter to the Bishop of Mostar-Duvno, Petar Palić, stating: "As the church ordinarius in charge, I send you sympathy for the great tragedy in Posušje where eight young people lost their lives.

[23] Prime Minister of Croatia, Andrej Plenković, stated: "In disbelief and great grief, I received the news about the tragic loss of eight young lives on the New Year's Eve night in Tribistovo near Posušje.

President of Croatia, Zoran Milanović, stated: "In great sadness and grief, I received the shocking news about the tragedy in which eight young lives were lost in Tribistovo near Posušje.

"[1] Croatian Minister of Foreign and European Affairs, Gordan Grlić-Radman, stated: "Shaken by the tragedy in the municipality of Posušje, where eight young people lost their lives last night due to gas poisoning, I express my condolences to the families and the loved ones.