Sharda Mishra (45), Ramesh Prasad (45) along with Ramjeevan Gupta (32) and Rajendra Prasad (26) had taken a lunch break from their job at Pandit Dyeing, a unit based in Indira Nagar, Dharavi where a total of 12 persons worked. The four men, who hail from Ghaziabad, prepare lunch in the unit itself, police said.

Both Mishra and Prasad died while undergoing treatment shortly after admission. Gupta and Prasad are reportedly in a critical condition. “We have registered a case of accidental death,” a police officer said.