Oil prices edged lower in subdued Asian trade on Monday but retained support from concerns about a crisis in Libya as well as an upbeat demand outlook in the US, analysts said.
The US benchmark, West Texas Intermediate (WTI) for delivery in July, fell 26 cents to $104.09 per barrel in mid-morning trade. Brent North Sea crude for July delivery dropped 26 cents to $110.26.
Singapore's United Overseas Bank said “trading action may be limited” with financial markets in the United States and Britain closed for public holidays.
“European geo-political concerns and signs of improving US crude demand” provided a lift to prices, it said in a note to investors.
Traders are closely watching the situation in Ukraine, where chocolate baron Petro Poroshenko on Sunday claimed a resounding victory in the country's key presidential election
The polls were triggered after former pro-Russian leader Viktor Yanukovich was ousted in February.
Poroshenko immediately vowed to end a bloody pro-Russian uprising that thwarted voting across swathes of the separatist east.
Washington and its European allies supporting Ukraine's Western-friendly government have accused Russia of fomenting unrest in the country's east, allegations Moscow denies.
A full-blown armed conflict in the ex-Soviet state - a major conduit for Russia's gas exports to Europe - could disrupt supplies and send energy prices rocketing, analysts say.
Prices have been propped up by fears of a supply disruption in Opec member Libya, where escalating lawlessness has been aggravated by power struggles between politicians and militias.
Upbeat sentiment about demand in the US following a bullish crude stockpiles report last week also lent support, analysts said. - Sapa-AFP