Kobe Steel has announced that an external investigation into a data-cheating scandal has found a new case of inappropriate corporate behaviour. The company said it needs fundamental governance reform, and added it would overhaul its board to ensure a third of its members are external directors. Kobe Steel said Chief Executive Officer Hiroya Kawasaki will be stepping down. The company is Japan's third-largest steel maker and supplies manufacturers of cars, planes, and trains across the globe. The company said in October that around 500 of its customers had received products with falsified specifications. The scandal has cast doubt over corporate governance in the manufacturing industry in Japan.