Prime Minister Sheikh Hasina on Wednesday ruled out again the existence of militant outfit Islamic State (IS) in Bangladesh.In reply of the question of Member of the parliament Shafikul Islam, Prime Minister said this at the session of National Parliament.The premier said her government believes on the principle of zero tolerance against the all sorts of militancy.She also said, we are committed to face the militancy strongly. Sheikh Hasina said, our law-enforcing agencies have demonstrated considerable success in arresting some of the culprits who are accused in different destructive activistis.