Cannabis plants with a street value of more than £100,000 were discovered by police in an abandoned building in Nelson Road South, Great Yarmouth.
Following the discovery, on Sunday, March 5, the plants were seized as well as growing equipment.
No-one was found at the address at the time of the discovery.
A Norfolk Police spokesman said the investigation was “ongoing”.
The electrical supply to the premises was found to have been dangerously tampered with.