By Tarek Amara TUNIS, April 13 (Reuters) - A Tunisian military court has ordered the release of ousted autocrat Zine El-Abidine Ben Ali's former interior minister and security chief, who were jailed after the country's 2011 revolution, the government and lawyers said. The release of security chief Ali Seriati and former interior minister Rafik Bel Haj Kalem, accused of repressing protesters during the uprising, may fuel tensions in a country just in the final stages of democratic transition. Tunisia has mostly overcome the political instability that followed its revolt, adopting a new constitution and installing a consensus caretaker government that is administrating the country until elections later this year. But as in other "Arab Spring" nations which ousted long-standing rulers in 2011, debate over the role of former regime officials is a sensitive part of transition in Tunisia, where an Islamist party confronts a mainly secular rival coalition.