At least 66 people were killed and 51 injured as a fire ripped through a ski resort hotel in northwestern Turkey on Tuesday, according to the country’s interior ministry.

Turkey has detained nine people as part of an investigation into a fire that killed 76 people and injured dozens at a ski resort in the Bolu mountains, authorities said.

ANKARA — As the death toll from an overnight fire at a popular ski resort in northwest Turkey rises to 66, Turkish President Recep Tayyip Erdogan said on Tuesday that the country will observe a day of national mourning on Wednesday.

The fire, which broke out early on Tuesday, trapped many of the registered 238 guests inside, leaving 78 people dead and dozens of others injured.

Family and friends bid a tearful farewell to Ferda Apak and her daughter, Vedia Nil Apak, at an emotional funeral held Thursday in Istanbul. Both lost their lives in the tragic fire that swept through a hotel in the Kartalkaya ski resort in the northwest of the country on1.