The incident occurred at around 2.15 a.m. at the Alcon Stylus Building. The sudden collapse of the wall trapped the victims as they slept in their huts, the police and NDRF officials said.

Three people, including two minors, were rescued.

The victims comprised 10 men and five children. Work is on rescue some others still feared trapped in the rubble.

"We are immediately issuing a 'Stop Work' order to an adjoining building where construction activities are underway. We will also give full relief to the victims' families," Pune Mayor Mukta Tilak told the media here.

Guardian Minister Chandrakant Patil was also on his way to inspect the accident site.

The Pune Collectorate and Pune Municipal Corporation authorities said they will probe the tragedy.