Asian shares fell on Tuesday, AP reported. Tokyo's Nikkei 225 fell 1.9% by midday Tuesday to 19,292.69 while the Hang Seng index in Hong Kong lost 2.3% to 23,772.36. South Korea's Kospi slipped 1.5%, to 1,869.50. Australia's S&P/ASX 200 fell 1.8% to 5,358.40 and the Shanghai Composite index gave up 1.4% to 2,813.95. On Tuesday, U.S. crude for June delivery rose 99 cents to $21.42 per barrel in electronic trading on the New York Mercantile Exchange. Brent crude, the standard for international oil pricing, dropped 19 cents to $25.38. In currency trading, the dollar weakened to 107.51 Japanese yen from 107.63 on Monday. The euro fell to $1.0834 from $1.0862.