Chennai, Nov 09 (ANI): Tamil Rights groups screened a documentary in Chennai showcasing the plight of their fishermen and urged Central government to raise the issue with the Sri Lankan government. Five Indian fishermen were arrested by the Sri Lankan Navy in 2011 on charges of smuggling drugs and on October 30, the Colombo High Court held them guilty. Talking to mediapersons in Chennai, the founder of ‘the May 17 Movement’, a group demanding an independent state for Tamils living in India and Sri Lanka, Thirumurugan Gandhi, said the Indian government needs to take up the investigation very seriously. Gandhi alleged that despite Sri Lankan defence personnel visiting India time and again, the government has not bothered to take up the issue with them.