Cannabis plants with a street value of more than £780,000 have been found in two industrial units in Thornbury.
Police were alerted after a tip-off over the weekend. They found 786 cannabis plants - each worth around £1,000.
Its the second major seizure of cannabis from an industrial unit in the Bristol area in recent weeks. Last month more than 1,000 plants were found at a unit in Kingswood.
The latest discovery was made on Sunday. When officers went to investigate they smelt what they believed to be cannabis and heard a low humming noise from one of the units. A closer inspection found a door slightly open which revealed the cannabis plants.
Further searches identified a second unit with more plants. No arrests have yet been made.
In an effort to raise public awareness Avon and Somerset Police has issued a list of signs that may indicate a property is being used to cultivate cannabis.
- A strong vegetable smell
- Windows covered from the inside with plastic or polythene
- Condensation on windows
- Curtains always drawn
- House appears unoccupied