PESHAWAR, Pakistan, April 29, SPA _ Investigators tried Sunday to identify a suicide bomber who attacked a political rally, as the toll from the blast rose to 27 dead and 47 injured, including Pakistan's top security official. Interior Minister Aftab Khan Sherpao was left spattered in blood but only slightly injured in the attack Saturday inCharsadda, a town in North West Frontier Province, the Associated Press reported. There was no immediate claim of responsibility for thebombing, which took place just after Sherpao completed aspeech to a rally of his political supporters. --SPA www.spa.gov.sa/445222