PESHAWAR - Two sisters were killed after the roof of a house collapsed due to heavy rain in Halimzai Tehsil of Mohmand Agency on Wednesday, an official of the political administration said. The political official said that roof of the house of Niaz Muhammad collapsed, injuring him and his two daughters. First rain of winter continues to lash parts of Khyber-Pakhtunkhwa and Fata, leading to heavy snowfall on mountains in the hilly areas of Malakand and Fata.