ISLAMABAD: At least three people were killed when a 5.1-magnitude earthquake struck northern Pakistan early Saturday, officials said. The United States Geological Survey said the tremor struck at a relatively shallow depth of 26 kilometers with its epicenter located 15 kilometers (nine miles) to the northeast of Islamabad. Senior police official Sher Akbar Khan of the northwestern town of Abbottabad said two women and a nine-year-old child were killed when their house collapsed. The women were aged 25 and 48 and the boy nine. The injured girl was about six, Khan said. The quake was felt in several cities in the provinces of eastern Punjab and northwestern Khyber Pakhtunkhwa, Ghulam Rasul. Residents of the Pakistani capital reported buildings and vehicles shaking after the quake hit at 1:59 a.m. local time.