A fire erupted in a maternity ward in Pakistan's capital on August 26, killing 14 children, the Islamabad district office said.

A fire erupted in a hospital's maternity ward in Islamabad on Wednesday, killing 14 infants, Pakistani authorities said, with the prime minister calling for an investigation.

The fire broke out on the third floor of the Mother and Child Health Ward at the public Pakistan Institute of Medical Sciences (PIMS), the Islamabad district office said in a statement.

The statement gave a death toll of 14, who, according to Prime Minister Shehbaz Sharif, were all infants.

Sharif and Interior Minister Mohsin Naqvi expressed "deep grief and sorrow over the deaths of 14 infants" in separate statements.