In 2013, Arjunwar, who is suffering from Thalassemia, unintentionally crossed into Pakistan following an argument with his family.
"He was released from Karachi's juvenile jail early morning and flown to Lahore, where he was handed over to Indian authorities at the Wagah border," Geo News reported.
He was arrested in 2014. India, however, confirmed his citizenship last month only.
Human rights activist and singer Shehzad Roy's efforts made this boy's repatriation possible.