Hong Kong stocks closed over 1,000 points lower Thursday amid renewed concerns over credit markets following news that London-based fund Carlyle Capital is facing liquidation due to mortgage securities related troubles.

The benchmark index plunged 1,121.12 points, or 4.79 percent, to close at 22,301.64 on Thursday. The index opened at 22,925.42 and fluctuated between 22,251.24 and 23,007.61 during the session.

Investors showed persistent concerns on the credit crisis, as the London-based fund Carlyle Capital is in a shortage of liquidation due to mortgage securities problems.

Dealers said the market was also pressured by continued falls on the Chinese mainland bourses, record oil prices and a slide in the U.S. dollar.

Turnover rose to 106.84 billion HK dollars (13.74 billion U.S. dollars) from Wednesday's 89.91 billion HK dollars (11.55 billion U.S. dollars), crossing the 100 billion HK dollar level for the first time since February 4, due to China Railway Construction's debut.

The Hang Sang China Enterprises Index, tracks the overall performance of 42 Chinese mainland state-owned enterprises listed on the Hong Kong Stock Exchange, fell 6.08 percent, or 783.29 points to close at 12,094.06.