>> reporter: they are trying to figure out how the two duped the system and obtained the fake documents. >> there is underlying speculation that there was a source where for certain some money that these documents could be constructed for $,000. whether that is true or not will be determined. >> reporter: cnn legal analyst mark o'meara said they must have had help. >> it has to be somebody on the inside. it has to be. somebody in the clerk's office, somebody in the courthouse and maybe somebody in a state attorney's office position, a secretary maybe who can actually get that paper work done. >> reporter: standing at his father's grave, robert pew jokes up while his killer charles walker was on the run he struggled reliving his family's nightmare. >> he had no remorse when he killed our father in front of us the first time. >> reporter: telling cnn that additional arrests are expected.