Jefferies Financial Group Inc. has received new information suggesting that some invoices backing its financing for iron ore trader Sapphire Minmetals Corp. may not be legitimate. This development comes as Sapphire Minmetals faces scrutiny regarding its financial practices.

The invoices in question are reportedly linked to the company's operations and its dealings with Jefferies. The nature and extent of the alleged discrepancies are still under investigation, but the information has raised concerns within Jefferies regarding the collateral supporting its loans.

Sapphire Minmetals has been a significant client for Jefferies in the commodities sector. The potential for fraudulent documentation could have substantial implications for Jefferies' exposure to the trader and its overall financial health. Further details are expected as the investigation progresses.