All four suspects are now in custody in connection with a drug investigation at a southern Illinois group home for recovering addicts.
After a nationwide arrest warrant was issued for Kevin R. Chandler he is now in custody.
Over the weekend, Earl D. Merritt was captured by the Carrier Mills Police Department. Deputies already arrested Gordon Yearian at the scene on Thursday and on Friday morning, deputies say Keith Horton turned himself in at the Williamson County Courthouse
Investigators say one of the residents made a large drug sale to an undercover officer, which led them to search the property on Thursday.
During that search, they reported finding methamphetamine, controlled substances, digital scales and more.