Officials in Turkey say that a fire has raged through a 12-story hotel at a popular ski resort in the northwestern part of the country during a school holiday, killing at least 76 people.

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.

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.