LAHORE: Eleven people were killed and six injured after a three-storey house collapsed in Lahore’s Harbanspura late on Wednesday, according to authorities.

Spokesperson for the Lahore deputy commissioner Harris Ali confirmed to Dawn that the death toll of the incident had risen to 11 after rescue workers pulled out the body of a minor girl.

The rescue operation ended following the recovery of the girl’s body, he said.

The spokesperson said three brothers and their families were residing in the building, and they were joined by their sister and her children for a birthday celebration on Wednesday night, following which the structure collapsed.

“The building collapsed floor by floor from the top down,” he said.

The cause of the collapse is yet to be determined, for which Lahore DC retired Capt Muhammad Ali Ijaz has ordered an inquiry, a statement issued by his office said.

The statement said he supervised the rescue operation, adding that Rescue 1122 teams, assisted by district administration officials, carried out the operation.

Heavy machinery had also been deployed to speed up the operation, it said.

The incident comes a month after a roof collapse at a tuition centre in Lahore’s Kahna area claimed the lives of 14 children. Police had registered a case against the tuition centre’s owners and the building’s contractor a day after the incident, with the first information report stating that the suspects were putting soil on the dilapidated building’s roof, which collapsed because of the extra load.

In a similar incident in early May, four children were killed and 20 people injured after the roof of a classroom at a private school in Dera Ghazi Khan collapsed. A probe into the incident revealed that construction for an extension of the building was under way when the roof of the classroom collapsed.

According to the district administration’s incident report, the roof was overloaded as sand and bricks were placed on it, and it could not bear the load and consequently collapsed.