Singapore - Oil prices eased in subdued post-holiday Asian trade on Monday, but retained support from the escalating Ukraine crisis following a deadly gunfight over the weekend, analysts said.
New York's main contract, West Texas Intermediate for May delivery, dipped 13c to $104.17 in afternoon trade and Brent North Sea crude for June eased 42c to $109.11 a barrel.
Desmond Chua, market analyst at CMC Markets in Singapore, said trading volumes were thin because of the long Easter weekend.
Financial markets in Hong Kong, Australia and New Zealand are closed for public holidays.
However, investors were increasingly concerned about events in Ukraine, Chua said.
Rocketing
Two pro-Kremlin rebels were killed in a deadly gunfight in a town in the east of the country on Sunday, shattering an Easter truce and raising fears that Russia would send in troops to the ex-Soviet state.
The attack undermined an accord worked out in Geneva last week between Russia, Ukraine and Western powers for pro-Moscow rebel groups to surrender their weapons.
With Ukraine a major conduit for Russian gas to western Europe, there are concerns that any full-scale armed conflict in the region will disrupt supplies and send oil and gas prices rocketing.
Chua said investors will next be focusing on United States first quarter corporate earnings data to be released this week, for clues about the world's biggest economy.
Nearly one-third of Standard & Poor's 500 companies will be reporting earnings this week, he said.