Three abductors Mahadev, Anuj, and Ravindra were arrested for kidnapping the boy, the police said.
Ghyanshya, studying in Class II, was playing in the Ahinsa Park near Shyam Nagar when he was kidnapped by the accused, two of them auto-taxi drivers.
The accused then called the victim's father Pintu Rana, who plays Dhol (drums) in marriages, demanding Rs 20 lakh as ransom to release the boy.
The boy was handed over to his parents in Sodala area this morning, they added.