Tokyo, May 28 (BridgeNews) - Japanese shares ended the morning session lower led by concerns over bad loans in the banking sector and following U.S. stock declines Friday. Trading activity was thin with investors taking a wait-and-see attitude ahead of the April preliminary industrial output data due out Tuesday. The Nikkei 225 Stock Average fell 0.4%, or 53.18 points, to 13,712.74 after fluctuating in a narrow range of about 100 points.