Fort Bend County authorities estimate a suburban Houston marijuana farm raided this week had up to 10,000 plants that could have been worth $10 million on the streets.
The field near the Sugar Land Regional Airport covered three to five acres and was accessible only by boat from a creek.
Sheriff's spokesman Bob Haenel said one person is in custody after the raid on Tuesday and tracking dogs have been looking for others.
Officials believe at least two people were caring for the pot plot and living at a makeshift campsite.
Haenel said it's the largest marijuana growing operation ever found in the county immediately southwest of Houston.