Rawalpindi: A youth has committed suicide after firing upon his sister over a domestic dispute within the jurisdiction of Peer Wadhai police. According to SHO Peer Wadhai police, Mustafa Niazi, the accused, identified as Amir Suhail, student of FSc opened fire on his sister on a minor family dispute and later ended his life by firing bullet on his head. Due to firing, girl sustained serious injuries. Both the injured girl and body of boy were rushed to PIMS for first aid but she succumbed to injuries while in Operation Theater. The body of deceased was also handed over to his relatives after medico-legal formalities. Police have registered a case and started an investigation.