Details have emerged of a joint PSNI and environmental agency operation targeting a suspected illegal landfill in County Tyrone.
Police and Environmental Crime Unit workers searched a site near Dungannon.
It showed there was controlled waste on the site, mainly plastics, with some evidence of tyres and other mixed waste.
Two diggers were also seized as part of the investigation, which is at an early stage.
The search was carried out on 8 June under warrant, but the details have only just been revealed.
An area of one acre was searched using exploratory boreholes to recover material for testing.