(Campbell County) The suspected ringleader in a fentanyl trafficking operation is now behind bars. 

25-year-old Keysean Dickey, of Mason, is being held in the Campbell County Jail. He's the last of 16 defendants to be tracked down by police. 

Investigators believe the group distributed more than 400 grams of fentanyl between September and late June. They say they were pulling in about $40,000 per week.