The world’s second-largest retailer Carrefour has filed a lawsuit against legal firm Deloitte over accounting issues at its operations in Brazil, according to reports.

Carrefour has had difficulty tracing the source of the issues in Brazil, which led to the retailer cutting its profit target for 2010.

Last month, the company said that following a series of audits, the company will record EUR550m (US$718m) in one-off charges from its Brazilian business, against the EUR180m previously estimated in mid-October when it first shaved its 2010 profit goal.

The firm said that it was determined to get to the bottom of the causes, and as a result, launched a forensic investigation into the issues, which have been rumbling on for around five years.

According to Le Figaro, the retailer has now filed a lawsuit against Deloitte, the law firm appointed to audit its accounts.

Carrefour declined to comment on the reports when contacted by just-food.