The company was contracted to provide services in the residential colony where the incident occurred.
"We are cooperating with all the relevant authorities and government agencies as they investigate this tragic case and have also launched our own comprehensive incident review," JLL said in a statement.
The company said it is cooperating with the authorities to ensure a thorough investigation and would update further on the matter when more details are available.
Sarfaraz, Pankaj, Raja, Umesh and Vishal were suffocated to death after they entered the sewer in one of the residential towers at Capital Green-DLF.
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