Nomura Holdings has said that a former employee of its securities subsidiary has been formally charged by the Hiroshima District Public Prosecutors’ Office for a slew of alleged crimes.

The former employee was charged on suspicion of robbery, attempted murder and arson of an inhabited building, Japan’s biggest brokerage said in a statement on Wednesday. Nomura added it is implementing strict measures to ensure more robust internal systems, in order to reassure its clients and regain their trust.

Earlier this month, Nomura detailed measures it is taking after the case came to light. This includes tightening rules on employee visits to clients’ homes as well as getting prior approval to consult with customers in their homes.