Azra Parveen, a 2001-batch RAS officer posted as the District Excise Officer in Jodhpur, was returning to Jodhpur from Jaipur in a cab after celebrating Eid with her family when the incident occurred around 12.30 PM, they said.
Parveen and her sister-in-law Arshi Khan were killed on the spot when the car hit a truck coming from opposite direction, police said.
"Rida and Biba, Parveen's daughters, were seriously injured and have been under treatment at JLN Hospital in Ajmer," said Ajmer IGP Malini Agarwal.
Police have been waiting for him to regain consciousness to ascertain the cause of the accident.