Nissan Motor Co. has found fresh cases of misconduct in vehicle inspections and may launch a recall, sources close to the matter said Thursday, in the latest setback for the global carmaker mired in quality control issues and the arrest of former chairman Carlos Ghosn.

The latest finding comes after the company pledged to tighten compliance to prevent recurrence of a string of improper practices at its domestic plants.

The automaker is also under increased scrutiny after its longtime leader Ghosn was arrested last month for alleged underreporting of remunerations.