ST. PAUL, Minn. (AP) — Police say a St. Paul pizzeria and ice cream parlor turned out to be a front for a marijuana trafficking business.

The investigation began last summer after a concerned citizen reported that Papa Dmitri's Classic Pizza and Ice Cream was rarely open and didn't seem to do much actual business. According to the criminal complaint, the employees there complained about a lack of heat, even though it had a pizza oven, and typically ate at nearby burger restaurant instead of at the pizzeria.

On Friday, Ramsey County authorities charged the owner, 32-year-old Ryan Dmitri Brooks Sr., his 61-year-old mother, his 82-year-old grandmother and his 24-year-old girlfriend with drug and firearms offenses.