The boss of Sims Metal Management's operations in Europe has left the company, but no reason for his departure has been given.
Graham Davy's departure has occurred as the company completes its investigation into possible fraud at its British business.
"Effective immediately Graham Davy, CEO Europe and Global Sims Recycling Solutions (SRS), is no longer employed by the company," the world's biggest scrap metal and electronics recycler said in a short statement on Wednesday.
There has been no suggestion that there is any link between Mr Davy's departure and the possible fraud at the company's British operations.
Sims said Hans-Otto Hagemann has been appointed acting managing director of SRS Continental Europe and SRS UK.
Sims group vice-president of investor relations, Todd Scott, would not give a reason for Mr Davy's departure, saying Sims did not discuss HR (human resources) matters.
In February, Sims revealed more than $430 million in writedowns connected to possible fraud and the poor performance of the business.
Sims wrote down the value of inventory at its British operations by $78 million after uncovering a possible case of fraud in January.
Sims also took a $354 million hit from impairment charges related to its UK and US operations.
In January, Sims warned of possible fraud at two of its British electronics recycling sites and launched an immediate investigation.
In February, Sims announced that group chief executive Daniel Dienst would leave the company on June 30 when his contract expired.
Shares in Sims Metal were 41 cents lower at $9.99 at 1301 AEDT.