Hong Kong shares sank on Monday, tracking a sell-off on Wall Street ahead of a much-anticipated Federal Reserve policy decision later in the week.

The Hang Seng Index sank 1.4 percent, or 252 points, to 17,930.

However, the Shanghai Composite Index gained 0.3 percent, or 8 points, to 3,125, while the Shenzhen Composite Index added 0.5 percent, or 10 points, to 1,921. (AFP)