State Police said an undercover Internet Crimes Against Children investigation led to the arrest of Christopher Turner, 42, of Columbia, on child pornography and drug charges on Thursday.
Investigators said Lisa Hadley, 29, was also arrested on multiple drug charges.
State Police said its Electronic Crime Branch investigated after finding a suspect on the Internet who was sharing images of child sexual exploitation.
Investigators said a majority of the images depicted children under the age of 12.
Turner's equipment that was seized during a search of his Columbia home was taken to the KSP forensic laboratory for examination.
Both Turner and Hadley were lodged in the Adair County Regional Jail.