In the first incident, a 34-year-old man was electrocuted in Faridpur area of the district after he allegedly came in contact with a high-tension electric cable, Additional District Magistrate (finance and revenue) Jagpal Singh said.
The man's niece, Neha (14), rushed to rescue him but she also got electrocuted, Singh said.
They were immediately taken to a community health centre, where doctors declared them brought dead.
In another incident, two minors were electrocuted in Defence Colony, Singh said.
The deceased were identified as Suhani (9) and Aman (15).