Police have discovered more than 680 cannabis plants being grown in a commercial unit in Grays.
In total, 688 plants were found across two floors of the property, including on a poorly constructed mezzanine.
The discovery was made on Monday February 15, in Manor Road.
Officers found six rooms filled with plants, a living space, a kitchen and two bedrooms.
Evidence was also found of extremely dangerous electricity extraction and UK Power Networks had to make the building safe before officers could enter to inspect the grow.
Chief Supt Stuart Hooper, West Local Policing Area Commander, said: “This discovery only serves to reinforce how important it is for members of the public to report suspicious behaviour to us.”
Anyone with information on the discovery should submit a report online at: https://www.essex.police.uk or use the ‘Live Chat’ button to speak to an online operator between 7am-11pm.
You can also call 101 and quote incident 211 of 15 February.
Information can also be given to independent charity Crimestoppers anonymously on 0800 555 111 or: https://crimestoppers-uk.org