No fewer than 362 people have been affected by chlorine gas leakage in the south western Iranian city of Dezful.
According to the Islamic Republic News Agency (IRNA), the leakage is from a reservoir in Dezful, Khuzestan Province.
It has caused respiratory problems and intoxication.
All hospitals in Dezful are on alert to present medical services to the injured.
Many of people affected by the poisonous gas have been dismissed from the hospitals after receiving ambulatory care.
Severe exposure to chlorine can result in symptoms of acute airway obstruction including wheezing, cough, and chest tightness, and acute lung injuries.