The G, H and I blocks of the Police Colony have been quarantined, Vijayanta Arya, DCP North-West Delhi has confirmed.
The wife of the Sub-Inspector is a nurse at a hospital.
Delhi Police is now identifying the people who came in contact with them.
According to the Union Ministry of Health and Family Welfare, there are 1,578 COVID-19 cases in Delhi, including 40 cured/discharged/migrated and 32 deaths.
( With inputs from ANI )