Brent crude oil slipped to a six-week low below $110 per barrel on Friday, weighed down by growth worries as political gridlock brought the prospect of massive U.S. government spending cuts and on disappointing European industrial data.

(Read More: Technical Indicators Turn Traders Bearish on Crude Oil)

Brent crude futures fell $1.56 to a low of $109.82 per barrel, its weakest since mid-January, before recovering slightly to around $110.10 by 1445 GMT. For the week, the contract is down more than 3 percent, its third consecutive weekly loss.

U.S. light, sweet crude fell to a low of $90.44, down $1.61. The contract has lost more than 2.5 percent for the week.

(Read More: Track US Crude Futures Here)

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