More than 150 employees at a Foxconn India factory that makes iPhones for Apple Inc were hospitalised for food poisoning.
“There was an outbreak of acute diarrhoeal disease reported among the Foxconn employees,” the statement from the Thiruvallur district administration said.
Almost all have now been discharged, the district government said.
It said 256 workers were treated as out-patients and 159 were hospitalised, of whom 155 have already been discharged.
It was not clear whether the incident disrupted production at the plant in Sriperumbudur, which is on the outskirts of the southern city of Chennai.
Most of the Taiwanese manufacturer’s workers in India are women.
On Sunday police detained scores of people for blocking highways in a protest against food poisoning incident.
Nearly 70 women and 22 men have been detained since Saturday for blocking Chennai-Bengaluru highway for several hours, said a police official.