Oil prices inched up on Tuesday after an OPEC report said market fundamentals remained strong and due to concerns supplies might be disrupted as the U.S. cracks down on Russian oil exports. The U.S. Treasury Department has sent notices to ship management companies requesting information about 100 vessels it suspects of violating Western sanctions on Russian oil, the biggest step by Washington since an imposed price cap to restrict oil revenues to Moscow. Additionally, the U.S. energy department plans to buy 1.2 million barrels of oil to help replenish the Strategic Petroleum Reserve after selling the largest amount ever from the stockpile last year. Focal points for the market include the International Energy Agency’s latest monthly oil market report later in the day. U.S. inflation data will also be published on Tuesday, while U.S. producer price index data is due on Wednesday.