Deutsche Bank shares fell sharply in early European trading after the Frankfurt public prosecutor's office confirmed that investigators raided one of the bank's branches on Tuesday.
The search took place at the lender's headquarters, marking a significant escalation in scrutiny of the German financial giant.
The market reaction was immediate, with investors selling off the stock amid uncertainty over the scope and nature of the investigation.
While details remain sparse, the raid has reignited concerns about potential regulatory or legal risks for the bank, which has been working to stabilize its operations in recent years.
The Frankfurt prosecutor's office did not immediately disclose the specific focus of the investigation, but such raids are typically associated with probes into financial misconduct, compliance failures, or other serious allegations.
The bank has not yet issued a public statement regarding the search.