Key topics:Mark Kretzschmar faces fraud charges over client investments.Victims include friends, family, and long-time business contacts.FSCA investigates amid rising financial sector accountability concerns.Sign up for your early morning brew of the BizNews Insider to keep you up to speed with the content that matters. The newsletter will land in your inbox at 5:30am weekdays. Register here.Support South Africa’s bastion of independent journalism, offering balanced insights on investments, business, and the political economy, by joining BizNews Premium. Register here.If you prefer WhatsApp for updates, sign up to the BizNews channel here..By Kerry Lanaghan.Johannesburg investment broker, Mark Kretzschmar, has handed himself over to the police amid mounting allegations of fraud involving tens of millions of rands. His voluntary surrender comes after months of silence and increasing pressure from investors who claim he misused their funds under the guise of legitimate financial advice.Kretzschmar, aged 57, reportedly walked into Bramley Police Station earlier this week, where he was arrested in connection with multiple complaints of financial misconduct. He is expected to appear in the Alexandra Magistrate's Court to face charges relating to the alleged defrauding of clients - many of whom were close acquaintances, friends, and family members.The case has sent ripples through Johannesburg's financial circles, as victims describe being blindsided by someone they believed to be a trusted advisor. One investor claimed to have lost over R2 million and was assured of safe, long-term returns. Others say they were misled into investing inheritances or life savings, only to discover years later that their funds were either mismanaged or had vanished altogether.Kretzschmar operated a small private firm, PCS Holdings, for nearly a decade. The business catered primarily to a network of personal and professional contacts, many of whom now find themselves financially exposed and seeking answers. What makes the scandal especially damaging is the nature of these relationships - trust-based and often informal - which may complicate legal recourse and financial recovery.In a report by News24, several victims had attempted to contact Kretzschmar in recent months but received no meaningful responses. Some say he had become increasingly evasive, while others reported a complete breakdown in communication. There have also been claims of similar incidents involving clients in other provinces, including Limpopo and KwaZulu-Natal, suggesting the problem may extend beyond Gauteng.While the full scope of the alleged misconduct is still unclear, early estimates suggest that total losses could exceed R40 million. The Financial Sector Conduct Authority (FSCA) has confirmed it is investigating multiple complaints and is working to determine whether any violations of financial sector regulations have occurred.Further complicating the matter is Kretzschmar's former association with an authorised financial services provider, through which he operated until early this year. That company has since distanced itself from him, suggesting he may have acted outside its mandate. They are reportedly seeking to have him formally barred from the industry.Earlier this year, Kretzschmar was briefly reported missing, prompting concern for his well-being. He was later found safe, but the circumstances of that incident remain unclear. His reappearance and subsequent arrest have reopened wounds for many of his clients, who now face the possibility of protracted legal battles to recover their funds.As the legal process begins, Kretzschmar's arrest marks a turning point in what could become one of the more high-profile white-collar crime cases in recent years. For now, his former clients are left hoping that justice and accountability will follow.