St. Louis Fed President James Bullard said on Friday inflation had become "pernicious" and difficult to arrest, and warranted continued "frontloading" through larger increases of three-quarters of a percentage point.
Brent crude futures LCOc1 fell 15 cents, or 0.2%, to $94.42 per barrel by 0034 GMT, while US West Texas Intermediate (WTI) crude CLc1 futures were down 21 cents, or 0.2%, cents at $88.90 per barrel.
US crude futures CLc1 fell 7 cents to trade at $87.20 per barrel at 0012 GMT, while Brent crude futures Lcoc1 fell 1 cent to trade at $92.44 per barrel.
Brent crude futures fell 51 cents, or 0.5%, to $93.78 a barrel by 0033 GMT. US West Texas Intermediate crude was at $88.66 a barrel, down 69 cents, or 0.8%.