Investigators served a search warrant to copy the main computer server in Governor Ernie Fletcher's office.
Vicki Glass, spokeswoman for Attorney General Greg Stumbo's office, says the computer materials were only copied, not seized, but wouldn't provide further information.
Investigators have already seized numerous computers, volumes of records and other materials from Fletcher's office and related agencies.
Stumbo's office and a special Grand Jury in Franklin county are investigating whether personnel practices in Fletcher's administration violated personnel laws.
Governor Fletcher himself has been subpoenaed to testify before the Grand Jury.
Officials with Fletcher's office declined to comment on the search warrant.