A US missile strike Friday killed four militants in the Waziristan tribal region of Pakistan, hours after a deadly suicide blast killed over fifty people in another tribal agency. Security officials told KUNA that two missiles were fired by an unmanned US aircraft at a suspected militant hideout in Shin Warsak area of South Waziristan tribal agency. Officials said that the strike killed four militants and wounded about two others. The targeted hideout was completely destroyed in the attack.