A former banker and his wife, who works as a mortgage broker, are arrested over allegations involving a multimillion-dollar fraud and a money laundering syndicate, according to reports from multiple Australian outlets. The pair are accused of being involved in a scheme that allegedly includes fraudulent conduct and the processing of illicit funds through financial and lending channels. Authorities allege the matters relate to large-scale financial wrongdoing, though specific details of the alleged offences, the amounts involved, and the mechanisms of the alleged scheme are not provided in the source summaries. The reporting indicates the arrest involves both the former banker and his wife, suggesting investigators view their roles as linked within the same alleged syndicate. The allegations have not been established in court in the information provided to this summary. The coverage focuses on the fact of the arrests and the stated allegations of multimillion-dollar fraud and money laundering activity. Further proceedings, such as charges, court dates, and the extent of the alleged involvement of each person, are not included in the provided excerpts.