Seven Indian fishermen along with two boats were detained by the Sri Lankan Navy on Thursday near Neduntheevu Island in the Palk Strait area.
The detained fishermen have been taken for investigations to Kankesanthurai port of Jaffna District.
Earlier on July 9, three Indian fishermen with one boat were detained by the Sri Lankan Navy, for allegedly practising in illegal fishing at Palk Strait.
The arrest was made by a Fast Attack Craft (FAC) belonging to the Northern Naval Command.
The FAC was on a routine patrol when they arrested the Indian fishing poachers while they were practising bottom trawling in Sri Lankan territorial waters.
The fishermen were brought to SLNS Uththara in Kankesanthurei.
They were later handed over to the Jaffna Assistant Director of Fisheries for further course of legal action.