The stores are accused of selling a banned substance
Three Greenfield gas stations were raided for selling was some call "legal pot".
Greenfield Police served three search warrants Wednesday afternoon in conjunction with an investigation into the alleged sale of of K2.
The businesses served the warrants were West End Sunoco on Jefferson Street, Greenway Gas Mart on North Washington Street and North End Mini Mart on North Washington.
The state of Ohio banned "spice" in 2011.