A large number of women workers of a company near here, which assembles and manufactures smartphone spares, resorted to a flash protest, blocking the busy Chennai-Bengaluru highway that led to a traffic snarl on Saturday.
The protest, which also spilled over to two other locations, affecting traffic on the Chennai-Tirupati route as well for some time, was called off after the intervention of authorities.
Police said employees reported vomiting and diarrhoea after they consumed food provided at the hostel canteen and 132 of them had to be treated at hospitals and except for four people, who continue to be treated, all others have been discharged.
