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.

A fire raged through a 12-story hotel at a popular ski resort in northwestern Turkey early Tuesday during a school holiday, killing at least 76 people — at least two of them when they jumped from the building to escape the flames,

ANKARA — As the death toll from an overnight fire at a popular ski resort in northwest Turkey rises to 76, Turkish President Recep Tayyip Erdogan said on Tuesday that the country will observe a day of national mourning on Wednesday.