The fisheries issue in the Palk Strait and the situation of detained Indian fisher crews as well as co-operation against cross-border extremist terror outfits were subjects of discussion when rising Tamil Nadu politician and Lok Sabha MP Kanimozhi Karunanidhi paid a courtesy call on Prime Minister Ranil Wickremesinghe yesterday. At the meeting, MP Kanimozhi (daughter of the late legendary Tamil Nadu leader Muthuvel Karunanidhi) spoke of the long standing cordial relationship between India and Sri Lanka, according to official sources.