The incident happened on November 1, but came to light after 15 days.
Sources told on Friday that it was the father-son duo, who after being released by their captors, had informed the police at the New Delhi Railway Station.
The businessman had arrived from Agra at the New Delhi Railway Station at 11 p.m. and booked a cab for Delhi airport.
As the two were settling down in the car, three to four people also got in the car and soon overpowered the father and his minor son.
The car moved on the Delhi roads throughout the night. The businessman was forced to hand over his belongings to the captors, who also withdrew cash through his ATM cards.
The captors then took the father-son duo to a house in East Delhi, where the businessman's mobile phone was used to book cabs for other customers.
Sources said the Delhi Police found the car, in which the two were held hostage, abandoned on the Meerut road.
In the complaint that the businessman gave to the police, he said that both he and his son were blindfolded.
This incident has put the Delhi Police in the dock, raising questions about its alertness, especially during night patrolling. The fact that the kidnappers could drive around the blindfolded duo freely on Delhi roads througout the night without being detected exposes the claims of Delhi Police that they are an alert force.
Even fifteen days after the incident, the police is yet to identify and arrest the kidnappers. Police sources said they suspect the dreaded Mewati gang to be involved in the incident.
( With inputs from IANS )