Two workers were killed and two others are in critical condition due to an ammonia gas leak in a cold-storage facility in India.

According to a report, about 10 laborers were working in Bindeshwari Cold Storage in Itaunja when the gas chamber exploded, leaking ammonia gas. While six workers ran outside for a safe cover, four fell unconscious after inhaling the poisonous gas. Storage in the state capital Lucknow late Saturday night.