New Delhi Mar 29 PTI Three workers fell into a sewer here on Tuesday and a rickshaw puller who tried to save them also got trapped inside with rescue operations continuing late into the night police saidThe incident took place in northwest Delhis Sanjay Gandhi Transport NagarThe three men who fell inside first are private contractual employees who were working on MTNL lines at the time of the incident police saidIt is feared that all four have died as there has been no movement for the last few hours they saidAccording to police the information about the incident was received at Samaypur Badli police station around 630 pmPolice personnel rushed to the spot and cordoned off the area Fire department officials and a team of the National Disaster Response Force NDRF are also part of the rescue operationRescue efforts are underway and none of the four have been pulled out yet Deputy Commissioner of Police Outer North Brijendra Kumar Yadav saidThe workers have been identified as Bacchu Singh Pintu and Suraj Kumar Sahni while the rickshaw puller has been identified as Satish 38 a resident of Sardar Colony Rohini Sector-16 police saidThe rickshaw puller is a hero as he tried to save the workers But he also got trapped inside the sewer they saidThere is an iron net inside the sewer and it is beneath the MTNL lines It is suspected the four are stuck there they addedDue to the presence of toxic gas in the sewer it is difficult to go inside even with protective gear Earth-moving machines are being used to widen the manhole for rescue workers to get inside police saidTalking to reporters a local Harinder Singh said that Satish is his friends brotherWe came to know that Satish went inside the sewer to help the others but now he is also trapped inside he said PTI NIT NIT DIV DIV