Sri Lankan Navy on Saturday detained a group of Indian Tamil fishermen, for allegedly straying into Sri Lankan waters.
The authorities apprehended 27 fishermen along wit their four boats off Delft island.
The investigation into the matter is underway at Karainagar, the north of the island nation.
Further details are awaited.
Straying of Indian and Sri Lankan fishermen into each other's waters is a recurrent problem as terrorities on the sea are not clearly demarcated.
Last month, 7 Indian fishermen were taken into custody near the Sri Lankan city of Jaffna along with their boats.