Brent crude futures were down 35 cents, or 0.51%, to $68.45 a barrel, while United States (US) West Texas Intermediate crude fell 25 cents, or 0.37%, to $66.75.

Trade was thinned by the US Independence Day holiday.

US news website Axios reported on Thursday that the US was planning to meet with Iran next week to restart nuclear talk, while Iran Foreign Minister Abbas Araqchi said Tehran remains committed to the nuclear Non-Proliferation Treaty.

"Thursday's news that the US is preparing to resume nuclear talks with Iran, and Araqchi’s clarification that cooperation with the United Nations atomic agency has not been halted considerably eases the threat of a fresh outbreak of hostilities," said Vandana Hari, founder of oil market analysis provider Vanda Insights.

Araqchi's comments came a day after Tehran enacted a law suspending cooperation with the U.N. nuclear watchdog, the International Atomic Energy Agency.

"But the price correction may have to wait till Monday, when the US reopens from a long weekend and takes in Sunday's Organisation of the Petroleum Exporting Countries (OPEC+) decision, which is likely to be another 411 000 barrels per day target hike in August," Hari said.

OPEC+, the world's largest group of oil producers, is set to announce an increase of 411 000 bpd in production for August as it looks to regain market share, four delegates from the group told Reuters.

Meanwhile, uncertainty over US tariff policies was renewed as the end of a 90 day pause on higher levy rates approaches.

Washington will start sending letters to countries on Friday specifying what tariff rates they will face on goods sent to the US, a clear shift from earlier pledges to strike scores of individual trade deals.

President Donald Trump told reporters before departing for Iowa on Thursday that the letters would be sent to 10 countries at a time, laying out tariff rates of 20% to 30%.

Trump's 90 day pause on higher US tariffs ends on July 9, and several large trading partners have yet to clinch trade deals, including the European Union and Japan.

--Reuters--