Two men from South Haven, aged 46 and 54, along with a 44-year-old Coloma man, were arrested on Thursday afternoon by a multi-jurisdictional police effort that raided a business on Kalamazoo Street in South Haven. Authorities claimed that they were running an illegal medical marijuana operation, seizing pot, hashish, packaging and labeling materials, records and computers, and over 47 hundred dollars in cash. No names were disclosed. The investigation is ongoing.