Singapore, Dec 29 (Reuters) - U.S. oil prices fell on Thursday following a surprise build in the country's crude stocks shown in data published by the American Petroleum Institute (API) late on Wednesday.
U.S. benchmark West Texas intermediate (WTI) crude futures were down 39 cents or 0.72 percent to $53.67 at 0033 GMT after settling up 16 cents at $54.06 per barrel in the previous session.
Brent crude oil futures had yet to trade after settling 13 cents higher at $56.22 in the previous session. Trade remains thin as most investors are away for year-end holidays, traders said.
The 4.2 million barrel build in U.S. crude oil stocks shown in the API data came as a surprise. Analysts polled ahead of the weekly inventory reports had forecast, on average, that crude stocks would decline 2.1 million barrels in the week to Dec. 23.
Instead, crude stocks rose last week as refiners cut output, amid a drawdown in gasoline and distillate inventories. Refinery crude runs fell by 604,000 barrels per day, API data showed.
In a potential sign that an output production cut is likely to be adhered to, the committee of OPEC and non-OPEC producers responsible for monitoring compliance with the production cut agreement will meet in Vienna on Jan. 21-22, Kuwaiti oil minister Essam Al-Marzouq told state news agency KUNA. (Reporting by Mark Tay; Editing by Eric Meijer)