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.

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,

Ali Yerlikaya said at least 51 other people were injured in the disaster that struck the Grand Kartal hotel in the resort of Kartalkaya, in Bolu province’s Koroglu mountains, some 300 kilometers (185 miles) east of Istanbul. The fire occurred during the schools' semester break, when hotels in the region are packed.