Police have seized 20 bags of suspected mephedrone during a drugs operation.
The bags of white powder were recovered during a search by police officers in Castlederg, Co Tyrone, on Friday, but details have just been released by the PSNI.
The seizure is believed to be the first of its kind in the North West and comes just weeks after a new law was passed to make the possession and the taking of mephedrone a criminal offence.
Six properties were searched and the bags of white powder were found in two of the properties. No arrests were made but police said they are continuing to make enquiries.
Area Commander Chief Inspector Andy Lemon said the seizure, coupled with the recovery of 40 cannabis plants last week in Artigarvan, demonstrated that police had the capability to tackle the drugs problem that currently exsists in the Strabane District area.