Two polio workers were killed and three others were kidnapped by the terrorists here on Saturday. Political administration sources said that armed extremists attacked the polio ammunition team in Tehsil Safi of Mohmand Agency. Two workers of the polio vaccination team were killed in the attacker while the extremists abducted three others. The bodies were shifted to hospital for post-mortem. The security cordoned off the area after the terrorist attack and launched search operation for the assailants.