ISLAMABAD (Reuters) - Pakistan said it will clamp down on charities linked to militants amid fears their involvement in flood relief, exploiting anger against the government, will undermine the fight against groups like the Taliban. Religious charities have moved in swiftly to fill the vacuum left by a government overwhelmed by the scale of the disaster and struggling to reach millions of people in dire need of shelter, food and clean water. It would not be the first time the government has annou-nced restrictions against charities tied to militant groups, but critics say banned organisations often re-emerge with new names and authorities are not serious about stopping them. The banned organisations are not allowed to visit flood-hit areas, Interior Minister Rehman Malik told Reuters. We will arrest members of banned organisations collecting funds and will try them under the Anti-Terrorism Act.