New Delhi Apr 25 PTI Rescue workers pulled out five labourers who were trapped for over three hours under the rubble of a house that collapsed in south Delhis Satya Niketan area on Monday fire officials saidThe three-storey house was undergoing renovation when it collapsed they saidDirector of Delhi Fire Services Atul Garg said all the five labourers who were trapped under the debris have been rescued and rushed to a hospital for treatment The rescue operation has endedThe National Disaster Response Force NDRF pressed its sniffer dogs into service to search for survivorsEarlier Garg said We received a call around 124 pm about a house collapse in Satya Niketan building number 173 here Six fire tenders have been rushed to the spot Since this building is in a congested area the main challenge was to take the rescue vehicles inside It was a difficult task he saidA police team is also at the spotOur priority is to rescue the trapped men My team and I are at the spot and helping the other agencies with the rescue operation Deputy Commissioner of Police Southwest Manoj C said earlierA senior fire official said according to preliminary inquiry it seems that the building was not in a good condition to undergo renovationThis was an old building and it was not in a good condition to undergo renovation We have got to know through local inquiry that the said building was being renovated to convert it into a PG accommodation So they must have broken some structure for this purpose which led to the collapse he saidSince renovation was underway no one was living in the building It has also been found that there was no proper building plan It was not a planned construction and was also not approved by the concerned authorities he saidChief Minister Arvind Kejriwal termed the incident very sad and said he is monitoring the rescue operationThis accident building collapse is very sad The district administration is engaged in relief and rescue work I myself am taking every information related to the incident he tweeted in Hindi PTI AMP NIT AKM AMP DIV DIV