The first took place at a business address on Gowthorpe in Selby at 4.30pm on Saturday 20 August 2011, following a report from a member of the public, which led to the discovery of 25 plants. As a result a second address in the Huntington area of York was raided and a further 34 plants were seized.
Police Sergeant Jackie Booth, of the Selby Safer Neighbourhood Team, said:
People involved with the production of illegal drugs should be aware that as well as being arrested for these offences, they may well face having their assets seized.
The police will use every tool available to disrupt the activities of people committing crimes of this nature in our communities.
If you have any information about people involved in the illegal drugs trade please contact North Yorkshire Police on 0845 60 60 24 7. Or call Crimestoppers anonymously on 0800 555 111.