Another polio case surfaced in Khyber Agency on Monday bringing the total number of polio cases in the tribal agency during the current year to six. According to Health Department of FATA, polio virus was detected in one-year-old Iqra hailing from Sardan area of Khyber Agency. The Fata IPI said an increase in polio virus was due to failure of anti-polio vaccination teams to reach the far flung militancy hit areas of the agency owing to security concerns.