A 13-year-old girl from Margate will not be charged following her arrest in connection with a 25-day blaze at a Westwood Industrial Estate unit.
Fire crews were called to the former Hilger Analytical unit after 16,000 bales of illegally stored household waste caught fire on September 15.
At the height of the inferno 14 fire engines and 80 firefighters were at the scene. Northdown Primary was closed due to “unsafe carbon monoxide readings,” and there were reports of Thanet children complaining of health problems including chest infections and asthma attacks.
Firefighters remained at the site for three weeks as the two-tonne bales, tightly wrapped in plastic, continued to smoulder.
Neighbouring businesses, including fitness centre CrossFit, were forced to close as the fumes continued to pollute the air.
A boy and two girls, all aged 12 from Margate, and a 13-year-old girl from Margate were arrested on suspicion of arson on September 23. They were released pending further investigation.
Kent Police have confirmed no charges will be made against the 13-year-old girl. The investigation is ongoing.
The site owner Conservation Property Holdings, registered in the British Virgin Islands and business rate holder DW Lands are yet to clear the site.
An Environment Agency investigation into the illegally stored waste is also ongoing.
