The fishermen freed from Malir jail in Karachi would travel to Lahore by train and be handed over to India at Wagah border, The Express Tribune reported.
"They were violating the territory while fishing in the open sea," said spokesperson of Maritime Security Agency (MSA).
Two boats were also seized from the possession of the fishermen, he added.
Both Indian and Pakistani fishermen are often arrested for illegal fishing since the Arabian Sea border is not clearly defined and many boats lack the technology to fix their precise location.
The fishermen often languish in jail even after serving their term as poor diplomatic ties between the two countries mean fulfilling official requirements can take a long time, the report said.