June 4 (Reuters) - European shares slipped on Tuesday as weakness in crude prices dragged energy stocks, while investors refrained from placing huge bets before the European Central Bank's interest rate decision later this week.

The continent-wide STOXX 600 was down 0.4% by 0720 GMT, snapping a three-day winning streak.

Energy stocks dropped 1.9% to hit over a two-month low, tracking a more than 1% fall in oil prices as investors worried about supply ticking up later in the year amid signs of weakening U.S. demand.

Adding to the sector's losses, British oil giant BP fell 2.7% after ratings agency S&P Global revised the company's credit outlook lower.

A risk-off mood also set in as market participants awaited the ECB's rate verdict on Thursday, where it is expected to ease borrowing costs by 25 basis points.

The recent uptick in the euro zone inflation data, however, has cast a doubt on further monetary easing prospects this year.

Among other stocks, Allianz slipped 2.1% after Citigroup downgraded the German insurer to "neutral" from "buy".

Maersk gained 1.6% after the Danish shipping group raised its full-year profit guidance on the back of strong container market demand. (Reporting by Shristi Achar A in Bengaluru; Editing by Mrigank Dhaniwala)