Earlier this week, pollution from the plant was so strong that it triggered a public alarm, causing residents to stay indoors.
The plant was bombed during the 1999 NATO air campaign during the Kosovo conflict, causing air and land contamination. The UN subsequently designated the area an environmental hazardous zone.
The petrochemical plant has since been repaired, but still doesn't have sufficient safety mechanisms to prevent leakages. The government has started legal action against the plant's managers.