Michigan State Police investigators said they shut down a large illegal marijuana grow operation at three locations across metro Detroit on Wednesday 18 February 2026.[1] The searches were carried out by the state police Marijuana & Tobacco Investigation Section, the agency’s unit for marijuana and tobacco cases.[2]

One of the locations was a former industrial building with multiple grow rooms, irrigation systems, security cameras and a “clone room” from which all the actively growing plants were derived.[1] The state police described it as a multi-million-dollar elaborate operation.[1] In all, officers seized more than 11,000 marijuana plants in various stages of growth and 41 pounds (about 18.6 kilograms) of dried marijuana flower.[1] They also seized eight firearms, Rolex watches, high-value jewellery and $146,000 in cash.[1]

A Metro Detroit News account repeating the state police statement listed the same seizures and the same description of the industrial building site.[3] The state police said the investigation was ongoing and would be submitted to the Attorney General for review when complete.[2] The state police reported no arrests in its account of the operation.[2]