NEW DELHI: After the Centre informed that it was working to bring a legislation to curb mob lynching incidents, the Supreme Court on Friday asked 19 defaulting states to implement its July 17 judgment providing a stop-gap mechanism to deal with such incidents within a week.Only Tamil Nadu, Madhya Pradesh, Gujarat, Jharkhand, Tripura, Assam, Haryana, Uttar Pradesh, Rajasthan and Bihar have filed affidavits on compliance of the SC's judgment laying down guidelines to prevent, remedy and punish mob lynching.A bench of Chief Justice Dipak Misra and Justices AM Khanwilkar and DY Chandrachud warned the other states to fall in line by September 13 or have their home secretaries summoned for personal appearance before the court. "No further time will be given to the states and if they do not file affidavits of compliance, their home secretaries will be asked to appear in person," the bench said.Attorney general KK Venugopal said the Centre had constituted an empowered group of ministers headed by home minister Rajnath Singh and comprising foreign minister Sushma Swaraj , highways minister Nitin Gadhkari, law minister Ravi Shankar Prasad and social justice minister Thawar Chand Gehlot "to deliberate on the issue of mob violence and lynching and make recommendations"."The matter will require extensive consultation with state governments, whether it is in relation to implementation of the provisions of law, being responsible for police and public order or contemplating amendments in criminal laws and criminal procedure. The consultation process is likely to take long," the Centre said in its affidavit.