In a latest revelation, Yadav confessed to meeting Baloch insurgents and separatists in Balochistan and Afghanistan.
According to security sources, the Indian agent had met Baloch separatists several times in Afghanistan in presence of Afghan intelligence officials.
“He also met Dr Nazar Baloch, chief of Baloch Liberation Front, in Afghanistan to plan militant attacks in the province,” said a source.
Besides, Yadav also told investigation officials that he had been meeting RAW officers in Afghanistan on several occasions.
India have admitted that Yadav was its former Naval officer, however it claimed that the man had no links with the Indian government.
After the arrest, Pakistan foreign ministry statement described the incident as the “illegal entry into Pakistan by a RAWofficer and his involvement in subversive activities in Balochistan and Karachi”.
It said the Indian High Commissioner had been summoned by the foreign secretary so he could convey his “protest and deep concern”.
Balochistan, Pakistan’s largest but least developed province, has been battling a years-long separatist insurgency that the army says is “terrorism” promoted by states hostile to Pakistan such as India.
Pakistan’s Interior Minister Chaudhry Nisar Ali Khan said the arrest showed that a “foreign hand” was behind unrest in the province.
He said a detailed investigation was under way and the government would also seek help from Iran, which borders Balochistan.