The Pakistan Maritime Security Agency (PMSA) handed over the Indian fishermen who were arrested yesterday to the docks police for further prosecution.
The fishermen were in Pakistan's territorial waters and despite warnings did not turn back and were arrested and their boats seized, a PMSA spokesman said.
India and Pakistan regularly arrest fishermen who stray in to each other's waters due to a poorly marked sea boundary and according to figures they are around 400 Indian fishermen presently lodged in jails in Karachi.