A CANNABIS factory in Long Lane, Grays was unearthed on monday after an alert by EDF staff working in the garden.
The property they were working on was unoccupied but staff had detected high levels of electricity extraction.
The police were contacted who, on entering the property, encountered several cannabis plants and electrical equipment.
Police are appealing for any information as to unusual levels of activity near to the property at 113 Long Lane in the Stifford Clays area of Grays.
Please ring 0300 333 4444.