India, Nov. 10 -- Three contract workers died of suspected asphyxiation while carrying out maintenance and cleaning work inside a nano-filtration feed tank at a Tata Electronics plant near Uddanapalli in Krishnagiri district on Monday (November 09) evening. The facility near Hosur manufactures components for Apple iPhones.

The workers were part of a team engaged in cleaning the effluent treatment plant (ETP) at the facility in Vanniyapuram. Krishnagiri Collector C Dinesh Kumar said there were no proper safety measures in place while handling the ETP. "The district administration is inquiring into the incident," he said.

According to the collector, Akmal first attempted to look inside the tank but fainted after inhaling gas. Kaveri then ...