The California Supreme Court has chosen a former colleague of Chief Justice Tani Cantil-Sakauye to investigate how the state bar erroneously disclosed topics on the July bar exam before the test’s administration.

Arthur Scotland, a retired presiding justice on the Third District Court of Appeal in Sacramento, will lead the investigation along with his law firm, Nielsen Merksamer Parrinello Gross & Leoni, the court announced after its regular conference Wednesday.