Rajkumari Bairwa was killed by her husband Kishori Lal, a resident of Sakatpura area, with a knife, Sub-Inspector Ram Prasad said.
The man fled the spot after the incident. A case has been registered at the Kunhari Police Station and he has been booked for murder, the officer said.
The couple entered into an argument over a trivial issue and in a fit of anger the man killed her, Prasad said, adding that the accused is a retired government employee.