The bodies of the police officer and his friend were found riddled with bullet wounds.
An Assistant Sub-Inspector (ASI) of Delhi Police and a woman were found murdered at a property dealer's office in New Delhi, police said on Sunday.
A police officer said residents of Deep Nagar in north Delhi told them about the deaths. The ASI and woman were identified as Joginder Lakra, who was posted with the Crime Branch in Rohini, and Manisha.
"The property office where they were found murdered belonged to Mr Lakra. He had rented it. Mr Lakra had five bullet wounds and his friend Manisha had taken three bullet shots," a senior police officer said.
They were found partially dressed.
Mr Lakra, a resident of Mundka village in Delhi, was married to a woman who was posted in the Security Cell of Delhi Police, the officer said.