(WSB Radio) -- A veteran member of the Alpharetta Fire Department is free on bond, charged with six counts of sexual exploitation of children. 

An investigation by the GBI's High Technology Unit found child pornography images on two computers, a desktop unit and a laptop, owned by Captain Tristen Cruz.

GBI spokesman John Bankhead told WSB's Mark Alewine the arrest stemmed from "a major federal investigation into child porn."  Bankhead said "the Feds who are working on this case came up with a name out of Georgia and turned it over to the High Technology Unit at the GBI to look at."  Bankhead said the case could lead to more arrests in Georgia.

A statement e-mailed to WSB by the Alpharetta Department of Public Safety indicates that Cruz has been placed on administrative leave with pay pending completion of the GBI's investigation.