Diu, Aug 30 (ANI): Family of an Indian fisherman, who died in Pakistani jail, mourned his death in Diu town of Union Territory Daman and Diu. The family came to know about the tragedy after receiving a letter from Pakistani government that however, didn't mention the cause of death. The family urged the Pakistani government to release his brothers, who were also arrested along with him. Nuclear-armed neighbours share a vast un-demarcated coastal border and officials say fishermen on both sides ignore rules in search of fish and frequently stray into other country and end up spending years in their jails.