David Green Junior's remains were found October 6 at his home on Ray Road - just north of the Raleigh city limits. According to his family, Green had been missing almost two years.
Warrants released on Thursday show authorities requested several credit card and bank statements belonging to Green.
Authorities say they wanted the information to identify "normal" activity, and pinpoint which activity was done after the murder.
Court documents have indicated that detectives believe Green may have been murdered in early 2009. They also believe Wendy Green, 41, David Green's live-in girlfriend and mother of their two children, sought checks from a family business after the Green was killed.
She is charged with first-degree murder and conspiracy to commit murder.
The couple's children, David Ruben Green III, 15, and Alexis Green, 17, face the same charges. Their cases are in juvenile court and are not public record.
Although the DA's office has not formally said whether it will attempt to try the children as adults, it has prosecuted other children as young as 13.
According to search warrants, Green's body was found covered in a sheet in a freezer kept in the basement. The 52-year-old had obviously been dead for some time. An autopsy listed the cause of death as "trauma."