A Delhi Fire Service officer said they received a call about the collapse at 10.46 AM and two fire tenders were rushed to the spot.
Besides Fire Service personnel, various other agencies including police and MCD, also took part in the rescue work.
Roshni was injured and is currently in hospital. Her parents did not sustain any injury, police said.
They said the owners of the house had built a washroom on the first floor although the foundation of the building was weak.
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