An armed robbery in Cass County has led to a massive marijuana bust.
It all happened Sunday morning at a home in the 6700 block of Bulhand Road, which is located in Calvin Township.
Police say a 60-year-old woman and her 63-year-old boyfriend were tied up at gunpoint while suspects stole several items from their home.
After the suspects fled the scene, police where called in to investigate.
That is when, in a strange twist, deputies say they discovered an elaborate marijuana growing operation on the property.
Over 500 marijuana plants and loaded weapons were recovered.
The 63-year-old man was arrested.
Both the home invasion and the drug bust remain under investigation.