Gardaí have discovered 500 cannabis plants with an estimated street value of €400,000 in Co Meath.
The discovery was made after gardaí searched an abandoned van on the M3 near Dunshaughlin.
The white Renault Traffic has since been removed for technical and forensic examinations.
The van was parked in the hard shoulder on the southbound side of the M3, between Junction 7 Skryne and Junction 6 Dunshaughlin.
No arrests have been made.
Gardaí are appealing to the public who may have witnessed any suspicious activity on the stretch of road to come forward and are particularly appealing to those with dash-cam footage.
Anyone with information is asked to contact the incident room in Ashbourne Garda Station on 01 8010600 or the Garda Confidential Line 1800 666 111.