Approximately 200 cannabis plants were seized during a drugs warrant in Newark.
Officers executed the warrant at a site on Tolney Lane, where they discovered four shells of static caravans with well-established cannabis grows.
No one was present when officers carried out the raid. However, an investigation has been launched to establish the circumstances around the plants and who is responsible.
Inspector Heather Sutton, of Nottinghamshire Police said: “We are continuously working hard to tackle drug crime and this morning’s results are extremely positive.
“We will not tolerate drug crime and we will continue to investigate suspicious activity.
“I’d like to thank the residents on Tolney Lane for their cooperation whilst this warrant was carried out.
“I urge anyone who has information about this particular supply to call us on 101 or Crimestoppers anonymously on 0800 555 111.”