New Delhi, Jan 19 (ANI): Sri Lankan Foreign Minister Mangala Samaraweera met Prime Minister Narendra Modi at his office on Monday. Reportedly, Samaraweera is carrying an invite for PM Modi to visit the island nation. On Sunday, Sri Lanka and India had pledged to deepen their relations and had agreed to work "closely and extensively".Ahead of his visit, Sri Lanka released 15 Indian fishermen and now no Indian fishermen are in island nation's custody.