Kulbhushan Jadhav was captured by the terrorist group Lashkar-e-Khorasan and then sold to the ISI in Pakistan. This revelation was made Baloch activist, Mehrab Sarjov. Explaining how the deal was struck Sarjov said that Jadhav had not entered Pakistan
Source: One india
More: How Kulbhushan Jadhav was abducted in Iran and sold to ISI