The Hang Seng Index fell 350.67 points to 23,955.49 on turnover of HK$72.35 billion ($9.34 billion).
In China the benchmark Shanghai Composite Index lost 1.70 percent, or 39.58 points, to end at 2,289.87 on turnover of 147.8 billion yuan ($24.1 billion).
The Shenzhen Composite Index, which tracks stocks on China's second exchange, dropped 1.22 percent, or 15.71 points, to 1,275.52 on turnover of 169.4 billion yuan