TEHRAN The bodies of four technicians were found in a sewerage canal in Ahvaz, Khuzestan Province, were they had entered to repair a pump on Tuesday.

The four repairmen were suffocated to death and their bodies were recovered a few hours after their death.

According to eyewitnesses two other workers were also poisoned severely after inhaling poisonous gases inside the sewerage canal at Khuzestan Steel Industries Company.