A close relative, who was in financial trouble, had kidnapped the child from near a building in suburban Kurla in order to extort Rs 50 lakh from his parents, the official said.
He said that the relative, identified as Shabina Khan, also involved four others in the plan, all of whom have been arrested.
"The woman called the child near a building in Kurla on Friday night. The four others kidnapped him at knife-point and then kept him, first in the house of accused Sohail Siddique and then in the office of another accused Sultan Khan, both in Govandi," the official said.
Acting on specific information, the police raided Khan's office and rescued the child and then arrested the five accused, he said.
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