At least five children of a family were killed when roof of a mud and stone house collapsed overnight due to heavy rain in Mangayal village area of Sihala here in Islamabad on Monday. According to police sources, the family was sleeping in the house at night when its roof caved in. As a result the kids were buried under the debris and died. Police and rescue team reached the spot after the incident and recovered all dead bodies from the debris. Police said that Altaf, head of the family belongs to Azad Kashmir and took the bodies of the deceased to his hometown.