The Denver Police raided a number of illegal marijuana grows this week as part of a two-year investigation.

Although the number of sites raided and the amount of marijuana that was confiscated is unknown, police say that nobody was arrested or persisted with any resistance in the raid.

The current law in Colorado says that a Colorado resident, 21 years of age or older, may grow a maximum of six marijuana plants, with no more than three being mature plants at a given time, without obtaining a license. Anything beyond this gives police the right to shut down the operation at hand.

With the current laws continuously changing across the nation, it is becoming difficult for the police to keep up with what is considered legal for these residents and what is not.