Doha: Oil prices eased on Thursday, reversing gains from the previous session, amid concerns over weak US demand after government data showed a surprise build in inventories in the world’s biggest crude consumer. Brent crude futures fell 24 cents, or 0.35%, to $68.87 a barrel after gaining 3% on Wednesday. US West Texas Intermediate crude fell 24 cents, or 0.36%, to $67.21 a barrel after climbing 3.1% previously.

According to Qatar News Agency, both benchmarks gained on Wednesday after Iran suspended cooperation with the UN nuclear watchdog, raising concerns the lingering dispute over its nuclear program may once again escalate. The US Energy Information Administration said on Wednesday domestic crude inventories rose by 3.8 million barrels to 419 million barrels last week.