Suicide bomber detonates at gate of Khadijatul Kubra mosque in Tarlai, killing 31 and injuring 169 during Friday prayers.
Death toll rose from initial report of 15 dead and over 80 injured; attacker was foreign national linked to Fitna al Khwaraji (TTP).
Leaders including Zardari, Sharif and Abbas condemn attack; security forces cordon area amid Uzbek President’s ongoing visit.