Out in the open and under the freezing weather, Mustafa Hamadi and his family settled into their makeshift tent in the village of Killi, in the northwestern Syrian province of Idlib - their second time being displaced in less than one year. The sub-zero temperatures that night on February 11 kept them awake, so just before midnight, Mustafa moved the gas heater inside the tent.
When the morning came, Mustafa, his wife Amoun, their 12-year-old daughter Huda and their granddaughter Hoor, who was just three years old, were all found dead after being poisoned by carbon monoxide.