ISLAMABAD, JULY 20, SPA -- A suicide bomber killed at least four persons including a security official in Pakistan s tribal area, bordering Afghanistan on Friday, officials said. Six other persons including three security officials were wounded in the attack. The incident took place at Boya check post at Miranshah-Datakhel Road in North Waziristan. The injured persons were taken to the Miran Shah hospital.--SPA www.spa.gov.sa/468920