Kenneth Keith has been arrested in Pulaski County.
Keith is a pastor at Main Street Baptist Church.
The arrest comes almost three weeks after the murders of Michael and Angela Hockensmith, and Daniel P. Smith.
Police say the three were shot and killed during a robbery at ABC Gold, Games and More in Danville.
Investigators say Keith is also a gold buyer with a business based in Somerset.
Danville Police say his arrest came after authorities executed three search warrants at Keith’s church, business and home.