Both were living with their children in Puducherry.
The woman was knocked down by a car while returning home from her office in her scooter followiang which she died.
Police said that on a complaint from the parents of the woman, and inquiry was conducted and it was found the doctor allegedly engaged mercenaries to kill.
All the six accused were since remanded by a local court to fifteen days judicial custody.
Police sources said that the doctor was absconding since the incident and was nabbed today on the premises of a private hotel.