Two injured persons, who were rescued from under the debris are recuperating in the hospital, police said.
"Ten people including five children and three women have been killed in the building collapse while two persons have been injured. Rescue operations are still on and debris is being removed," said Deputy Commissioner of Police (North) Madhur Verma.
An assistant junior engineer and a junior engineer of NDMC's Karol Bagh zone have been suspended, NDMC PRO Yogendra Singh Mann said, adding that an inquiry has been ordered into the incident in Inderlok area.
NDMC officials suspect construction work at an adjacent building may be one of the reasons behind the building collapse.
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"A notice was also sent to the neighbouring plot to stop construction earlier, but by continuing to dig, they have violated the order and hence due action will be taken against that party, if found guilty post the municipal inquiry," Mann said.
According to fire officials, they got a call around 9 AM about a building collapsing at Tulsi Nagar in Inderlok following which four fire tenders were rushed to the spot for the rescue operations.