The incident took place in Dallupura village near Mayur Vihar Phase-III at around 10 AM.
Six children, aged below ten years, were playing in the vacant plot owned by one Vijender when the incident took place.
The children were trapped under the debris. Rescue workers rushed them to hospital where five of them were declared brought dead.
"Five kids were killed in the incident. One is critically injured," the officials said.
The deceased were identified as Amit (7), Kanchan(7), Ankit (6), Baby (4) and Aditya (2). The injured has been identified as Saraswati (4).
Officials said construction of a boundary wall of around ten ft height was being carried out in the plot. "The wall collapsed adjacent to Hindon drainage," they said.
The children used to live with their parents at houses surrounding the plot. Two houses were also damaged when the wall collapsed.
A case under Sections 304 (culpable homicide not amounting to murder) and 288 (negligent conduct) of IPC has been registered against owner Vijender and contractor Bhanwar Singh.
B M Mishra, Deputy Commissioner, said they received information about the incident around 10 AM.
"We will conduct an enquiry. There seems to be negligence and violation. We have taken cognisance. It's an unsafe structure. The repetitive nature of such incidents needs to be looked into," he said.
