Sri Lankan Navy, who on Saturday surprised Indian fishermen trawling near Katchatheevu by offering them soft drinks and sweets, attacked eight fishermen in the Indian territory off Dhamushkodi coast early today, Fiseries Department sources said.br br Four fishermen suffered severe injuries on the head, hand and shoulder while others sustained internal injuries.br br All of them were admitted to hospital, the sources said.br br Two boats and 10 fishing nets were damaged in the attack with bottles, stones and sticks. The Navy personnel also took away the fishermen's catch, the sources said.