"Our team is investigating the reasons behind the incident. Firm action will be taken against those responsible. We will check whether proper permissions were taken and safety measures were followed," Pune police commissioner K Venkatesham told ANI.
Speaking to ANI, an official from the National Disaster Response Force (NDRF) said the wall collapsed due to heavy downpour in the city.
"The wall collapsed at around 1:30 am on Saturday, due to heavy rainfall in Pune. The boundary wall was built near construction site sheds and when it collapsed, at least three sheds were complete bogged down under the wall. It collapsed at least six feet below the surface level," said Sadanand Gawde.
NDRF teams rescued three injured and retrieved as many as 15 bodies. The injured have been shifted to Sassoon Hospital in the city.
Pune District Collector Naval Kishore Ram said those who died in the mishap were labourers hailing from Bihar and Bengal, adding that a relief amount would be provided to the kin of the deceased by the government.
"Negligence of the construction company is coming to light in this incident. Death of 15 people is not a small matter. Mostly (deceased) were labourers from Bihar and Bengal," he said.
A search and rescue operation is underway, and further details are awaited. (ANI)