KARACHI: Four people, including two brothers, were injured after a roof of a house collapsed in Liaquatabad on Saturday. According to rescue sources, 36-year-old Amir, Muhammad Kaleem, aged 30, and two brothers Yameen and Yaseen were injured when the roof of a house fell on them in Timber Market area of Liaquatabad. The injured were shifted to the Abbasi Shaheed Hospital for treatment.