Prime Minister Narendra Modi has asked state governments to take strong action against cow vigilantes who indulge in violence, Rajya Sabha was informed today. The written reply of Union Minister of State for Home Hansraj Gangaram Ahir came in response to Samajwadi Party MP Javed Ali Khans question on whether the government has taken cognisance of the statements made by the prime minister on August 6, 2016, June 30 and July 16, 2017. Honble Prime Minister has stated that the state governments must deal sternly against anti-social elements that create violence in the name of cow protection, he said. Ahir said police and public order are state subjects under the Seventh Schedule to the Constitution and state governments are primarily responsible for prevention, detection, registration and investigation of crime and for prosecuting the criminals through their law enforcement agencies. However, the Ministry of Home Affairs has issued advisories to the states and union territories, from time to time, to maintain law and order and ensure that any person who takes law into his or her own hands is punished promptly as per law, he said.