Junk asked that Robert F. Smith of the state auditor's office handle the investigation, according to this newsroom's partners at WCPO. The Chillicothe Gazette first reported the investigation.
Junk, as prosecutor, serves as statutory legal counsel for the sheriff’s office. A Pike County judge signed off on the special prosecutor Thursday.
MORE: Pike County Murders: Ohio lawmakers OK $100K to help cover costs
Reader was sheriff when eight members of the Rhoden family were killed in their homes in 2016. Last month, authorities arrested four people in connection with the homicides.
Unclear is whether the misconduct allegations are related to the Rhoden case.
Reader told WCPO he had no comment at this time.
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» Death penalty possible for 4 of 6 arrested in Rhoden slayings