Tuesday, they executed four search warrants at 1172 Crossbrook Blvd., 1803 Woodcrest Rd., 885 S. Broadleigh Rd. and 5151 Lambert Rd.
They discovered grow sites at three of these locations; the Broadleigh location was not a grow site.
Timothy Wolford, 55, and Billy Jay Cook, 40, were arrested. Wolford is already on federal probation.
Police seized 629 marijuana plants. That comes out to 200 pounds with a street value of more than $1 million.
It was hydroponic marijuana, which has a higher THC level and typically runs for about $5,000 per pound.
Investigators call this one of the most intricate grow systems they have found in years.
The investigation is ongoing, and police say a resident gave them a tip that helped the investigation.