Prime Minister Scott Morrison has defended banning Australian citizens from returning from India, amid criticism by human rights groups that the government’s threat to punish breaches with fines of roughly $50,000 and five years imprisonment is heavy-handed. “We’re all just working to do what’s right for the health interests of Australians,” Morrison said in a radio interview on Monday, adding that he implemented the ban on the basis of advice from his health officials. “We’re deeply, deeply concerned about the humanitarian crisis in India.” As infections surge in countries such as India, where daily cases topped 400,000 for the first time on Saturday, there are fears Australia’s quarantine system will buckle with more returning travelers testing positive. While the nation has come close to eliminating local transmission of the virus by closing its international border to non-residents other than a new travel bubble with New Zealand occasional cases leak in