Prices of oil futures erased all gains made earlier in the day on Monday and dropped over 1% after the United States saw higher-than-expected manufacturing sector figures for September.
The new data seemingly caused fears that the Federal Reserve still has room to impose additional tightening on the globe's biggest economy.
West Texas Intermediate (WTI) for settlements in November dropped 1.49% to $89.45 per barrel and Brent for deliveries in December declined 0.94% to $91.28 per barrel at 10:44 am ET.
