The other deceased in the accident was identified as Mohan, technical officer at the All India Institute of Medical Sciences (AIIMS).
Apart from them, three others were also injured in the car accident that took place at August Kranti Marg, South Delhi.
"The accident was reported at 1:30 a.m. when 48-year-old Sonia was riding in a Honda City car with a driver (Ramesh Kumar) along with Keshav Sharma. The car was rammed into by a Maruti Swift Dzire from behind whose driver was Mohan Kumar," said a police official.
All the victims were rushed to the hospital, where Mohan and Sonia were declared dead.