HARRISBURG — The attorney general says a central Pennsylvania technical expert used spyware and the county’s Wi-Fi network to spy on his estranged wife.

Thirty-six-year-old David Maurer, of Susquehanna Township, doesn’t have an attorney listed in court papers nor a listed telephone.

He’s charged with three counts of violating the state’s wiretap act and other crimes for allegedly secretly installing the spyware on his wife’s computer so he could spy on her chats, e-mails and Web browsing.

Investigators also determined he used Dauphin County’s wireless network to do that. The county district attorney referred the case to the attorney general.

Maurer allegedly sent computer screen shots from his wife’s computer to a child-custody evaluator assigned by the court.

Maurer faces a preliminary hearing Dec. 15.

The county didn’t immediately comment on his employment status.