Eleven Indian fishermen detained by Sri Lanka navy along with their fishing boat for allegedly straying into the Island nation's territorial waters were released after a overnight inquiry, today. <br/><br/>Official sources said the fishermen hailing from Threspuram hamlet in Tuticorin district had set sail into the sea for fishing in a country boat fitted with outboard engine yesterday morning.<br/><br/> While they were fishing in the high seas, a Sri Lankan naval fast craft detained them for allegedly straying into Lankan waters, mid night last night.