A fire broke out in the nursery of the Pakistan Institute of Medical Sciences in Islamabad, killing 14 newborn babies. 

The blaze erupted early Wednesday and was reportedly triggered by an exploding air-conditioning unit in the nursery. 

Fifteen babies were inside the nursery when the fire started, but hospital staff were able to rescue only one infant. 

Pakistan’s government launched an investigation into the tragedy, while the health secretary was removed from his position and officials began reviewing hospital fire-safety procedures, the AP has reported.

The deaths have sparked national mourning and calls for accountability and stronger safety measures in hospitals across the country.