Jammu and Kashmir Police arrested one militant along with his family in Doda district.
Arshad Hussain, who was arrested on Thursday, belonged to Hizbul Mujahideen and had crossed LoC (Line of Control) two decades back.
He was returning to his home in Doda district under the state government's Return and Rehabilitation Policy.
Reportedly, Hussain went missing in early 1990s and had crossed over to Pakistan occupied Kashmir (PoK) and took arms training under Hizbul Mujahideen (HM).
Mohammed Sharif Chouhan, superintendent of police (SP) of Doda said the 43-year-old militant chose to return from illegal route through Nepal, forcing the Indian government to arrest him.
"As per our records, Arshad Hussain had crossed LoC in early 1990s and he has returned with his wife and three kids, two daughters and one son. He crossed the Nepal border to enter India, so the case will be filed in similar manner to those that is filed against illegal immigrants. The case has been filed in that respect only. The investigation is going on," he said.
Hussain was returning along with wife Sumaira (36), his two daughters Mehrookh (10), Adeeba (6) and four-year-old son Mohammed Ahmed.
According to Jammu and Kashmir government's Return and Rehabilitation Policy, ex-militants who crossed over to PoK or Pakistan to receive arms training from terrorist camps in 1990s but have now shunned violence, can return to the mainstream if they surrender before Army or police in the valley.
Jammu and Kashmir government, along with intelligence and security agencies, then carries out a background check before helping in return.
Chouhan added that there are many ex-militants who have been seeking rehabilitation under government's policy and their applications are under process.
"As per our records, 142 youths are in the missing list. Families of 19 of them have given applications for seeking rehabilitation policy of the state government and for allowing them to return to their own country. We have sent those applications to our higher office and those applications have been processed. Three people have returned to us, though not under that policy," he said.