"Recent comments suggested that the Fed was moving more towards September or later, based off some softer economic reports," Alan Gayle, senior investment strategist and director of asset allocation at RidgeWorth Investments in Atlanta, Georgia, told Reuters. "June would come as a surprise."
Energy stocks along with oil prices fell after US Energy Information Administration report showed the largest weekly build in oil inventories since 2001. Brent crude declined 4.5 per cent and US crude dropped 5.6 per cent.
"The report is very bearish with the large crude oil inventory build and the somewhat surprising rise in petrol inventories," John Kilduff, partner at Again Capita in New York, told Reuters.
Earlier in the day, Royal Dutch Shell's US$70 billion deal to buy BG Group had lifted energy stocks. Shares of BG closed 26.7 per cent higher.
"The deal will put pressure on oil majors to act," Aneek Haq, head of oil research at Exane BNP Paribas in London told Bloomberg. "Shell has been opportunistic, Exxon may well feel the need to follow."
In Europe, the Stoxx 600 Index finished the session with a gain of almost 0.1 per cent from the previous close. Closing at 404.66, the index touched a record 405.78 earlier in the day.
France's CAC 40 Index slipped 0.3 per cent, while the UK's FTSE 100 Index fell 0.4 per cent, and Germany's DAX shed 0.7 per cent.