SINGAPORE (Dow Jones)--BP Plc. (BP) is investigating the reasons behind the resignation of some of its traders in Singapore in the "last few weeks," a company spokeswoman said Thursday. The company will share more details in due course, said the spokeswoman when asked to comment on a report in the Business Times that as many as 18 traders, mainly from its Singapore fuel oil trading operations, had resigned. The number of resignations involved is more than the usual attrition rate and comes amid some market talk of possible trading losses, the report said, without giving details. "The part about trading losses is unfounded," the spokeswoman told Dow Jones Newswires. The Business Times report said the company has "re-staffed" and brought back its operations to normal. -By Gaurav Raghuvanshi; Dow Jones Newswires; +65 64154 154; gaurav.raghuvanshi@dowjones.com (END) Dow Jones Newswires July 07, 2010 21:22 ET (01:22 GMT)