At least 40 people were killed and 83 injured on Friday when suicide attackers stormed a mosque near army headquarters in Pakistan's Rawalpindi city spraying bullets on hundreds of Friday worshippers, including military personnel, and hurling grenades before blowing themselves up.<br/><br/>The attackers, who used ladders to climb over the walls of the Jamia Masjid near Parade Lane, lobbed grenades and fired indiscriminately at worshippers. They also exchanged fire with the mosque's security guards.<br/>