Her husband told the police he had borrowed money from someone and alleged that the lender was behind the killing as he was unable to pay the amount back.
He had borrowed Rs 5 lakh in a high interest rate and as the debt grew into Rs 40 lakh, he was finding it difficult to pay back.
"There were four assailants in a car, according to the deceased's husband, and she was shot at twice," Deputy Commissioner of Police Milind Mahadeo Dumbere said.
Mr Dumbere said no one has been arrested yet and the body has been sent to Babu Jagjivan Ram Memorial Hospital (BJRM) Hospital for autopsy.
The family was on the way to their house in Rohini from Kashmere Gate, when the woman was murdered.