Officials from the Northern Ireland Environment Agency (NIEA) supported by PSNI is investigating lands in the Cookstown area for potential waste criminality.
A spokesperson for NIEA explained: “NIEA officers, supported by PSNI, earlier this week undertook under warrant an intrusive site survey on lands in the Cookstown area.
“The investigation follows earlier similar operations in May and June. The investigation concerns allegations that waste was being treated, kept or disposed of on the site.
“It can be confirmed that controlled waste was found on the site. This consisted of mixed household and commercial waste including plastic food packaging, paper, textiles and trommel fines.
“A polluting leachate was also identified emanating from the body of controlled waste.
“As the investigation remains ongoing, it is not possible to make any further comment.”
Environment Minister Mark H Durkan said: “I am concerned about this and have asked officials to keep me closely informed on developments.”