Authorities say Kentucky's largest city is becoming a hub for the illegal trafficking of medical marijuana.
Louisville-area police say the medical-grade marijuana is purchased legally in other states and resold illegally for premium prices on Louisville's streets and in surrounding communities.
Jeffersontown Police Maj. Ken Hatmaker says Louisville's central location has made it a hotbed for trafficking.
His department last year seized medical marijuana valued at more than $500,000 that is believed to have originated from California.
Local police say growing marijuana illegally is a high-risk, low-profit business.
Kentucky traffickers have found it much safer and more profitable to bring back medical marijuana from California, Colorado, Oregon or any of the 18 states where it can be legally grown and purchased.