MADURAI: The city police on Thursday arrested a shopkeeper at Pandi Bazaar for selling pornographic videos to school students.He loaded porn videos on memory cards, pen drives and sold porn DVDs to his customers, mostly students. A desktop and two laptops along with other electronic equipment used for the purpose have been seized.Police also arrested two other shopkeepers, who attacked an auto rickshaw driver, for having questioned the shopkeeper's illegal activity. The accused have been identified as R Kasirajan, 28, from Jaihindpuram, M Umar Sherif, 26, from Vishwanathan Nagar near K Pudur and Ajmal Kaja, 28, from New Ellis Nagar.The accused operate shops at Pandi Bazaar in Madurai city.Police said the incident came to light through an auto rickshaw driver based in Maninagaram. He often picked and dropped school students in the area. He recently learned that students commuting in his auto rickshaw were in possession of porn materials. The students told him that the porn videos were loaded in electronic devices like pen drives and mobile phones. They had got the videos from shop no. 3 at Pandi Bazaar.Police said when P Saravanan, 46, the auto rickshaw driver, confronted the shop owner for supplying porn to minors, Umar Sherif and Ajmal Kaja came to his aid, getting into an argument with the auto driver. They threatened the driver with dire consequences if he did not leave the shop immediately. However, Saravanan remained firm in his stand and told the trio that he would take the matter to police if they continued to supply porn to students .The verbal exchange quickly escalated into a physical fight when the accused attempted to stab him with a screw driver. Luckily, the driver managed to escape unhurt.Based on a complaint from Saravanan, a case was registered with Thilagar Thidal police station. The trio was arrested and made to appear before a judicial magistrate and sent to prison.They were booked under various charges including attempt to murder, using obscene words, threatening with dire consequence and violating Copyright Act, 2012.A senior police official said that shops would be closely monitored to ensure the owners did not indulge in any illegal activities.