The Supreme Court on Monday issued notice to the Centre on a petition challenging a notification that allows import of Genetically Modified (GM) processed food without any regulatory checks and exempts them from compulsory labelling, a move which is alleged to be against public interests. A bench headed by Chief Justice K G Balakrishnan sought response from the ministries of environment and forests, food and food processing industries and the Department of Science and Technology on a petition filed by Gene Campaign, the NGO opposed to commercialisation of GM crops without any check.