Oil major BP has filed a lawsuit for breach of contract against six former employees of its global fuel oil and Asia bunker team who have resigned since the end of May, according to company sources and court documents.
When contacted on Thursday, a BP spokeswoman declined comment beyond saying that an investigation was going on.
A writ of summons has been issued by the Singapore High Court on July 5 against the six senior BP staff who left the firm in the past two months.
These include BP's former head of global fuel oil trading, Quek Chin Thean, the Asia head of its marine fuels business, Clarence Chang, and senior traders, John Foo and Paul John Bradshaw, the court documents showed.
Reuters has reported that at least 18 staff, including three regional team leaders in Singapore, London and the United States had quit over the past month.