(WSB Radio) – Hemy Neuman was having an affair with the wife of the man he is accused of killing, said the attorney for Neuman's wife.

"We believe there was an extramarital relationship between Hemy Neuman and Andrea Sneiderman," Esther Panitch, who represents Ariela Neuman, told the AJC.

The Dunwoody attorney has subpoenaed the DeKalb County District Attorney to get evidence regarding the relationship between Sneiderman and Hemy Neuman.

Neuman was Andrea’s supervisor at General Electric Energy.

Hemy Neuman, 48, is charged with shooting Rusty Sneiderman to death outside a Dunwoody day care facility last fall.

The district attorney, acknowledging it possessed the requested materials, filed a protective order Thursday to shield it from handing over the discovery evidence.

"The state objects to the production of the information sought by plaintiff for two basic reasons; (1) that the information sought by plaintiff could be discovered through other means and (2) that the information could be released to the media," said chief assistant district attorney Don Geary in the state's response.

Police have not implicated Andrea Sneiderman in her husband’s slaying and her attorney has said her relationship with Neuman was strictly platonic.

Ariela Neuman and her husband have been married for 22 years. Monday, she field for separation.

The district attorney's office recently secured search warrants for e-mails and phone records of the suspect and his former charge, saying in an affidavit they may have concealed evidence regarding 36-year-old Rusty Sneiderman's death. Andrea Sneiderman and Hemy Neuman were in "continuous communication" before and after the Nov. 18 shooting, the affidavit states.

Doug Peters, one of Hemy Neuman's attorneys, had no comment on Thursday's court filings.