(REUTERS) - About US$150 million (S$206 million) worth of oil was stolen from Shell's biggest global refinery over several years, Singapore court documents reviewed by Reuters show, far more than reported when police first revealed the heist earlier this year.
Almost a year on from raids that led to over a dozen arrests, including of several former employees of the local unit of Royal Dutch Shell, charge sheets state that around 340,000 tonnes of gas oil were stolen from the oil major's Pulau Bukom site in Singapore, in incidents dating back to 2014.
Charges filed in the first few months of investigations after police raids in January related to the theft of around US$10 million worth of oil. Further charges levied in May showed a total of US$40 million worth of oil had been stolen.
A spokesman for Shell said the firm was "disappointed", adding that it has been working with investigators and taken measures to avoid repeat incidents at the Pulau Bukom facility, which lies just south of Singapore's main island.
"These include closer monitoring of products moving in and out of Bukom, tightening vessel management procedures, and stepping up ethics and compliance training," the spokesman said in an e-mailed statement on Thursday.
South-east Asia is a hot spot for illegal fuel trading, with its island-dotted waters providing cover for small-scale smuggling of oil products across borders. But the regularity and audacity of the thefts at Shell's refining facility - some of which took place during working hours - stand out.
"Fuel is both ubiquitous and untraceable, making its theft a seemingly low-risk criminal operation compared to something like drug smuggling or arms trafficking, where the concern about being caught is much higher," said Dr Ian Ralby, a maritime crime expert who works with both the United Nations and the US-based think-tank Atlantic Council. "That false sense of security leads to some fairly brazen forms of theft." Fuel theft could be worth US$133 billion a year globally, according to industry estimates, although Dr Ralby said that figure might be conservative.
The case in Singapore looks like it could drag on, given the routine addition of new charges and amendments to older charges. The police investigation is still ongoing.
"We are at the stage that the charges are still being rearranged... it's quite far from final sentencing," said Ms Ho Lifen, a lawyer at Rajah & Tann representing one of the accused former Shell employees, Cai Zhi Zhong.
Besides the former Shell employees, there have been related charges filed against former employees of one of Singapore's biggest marine fuel suppliers, Sentek Marine & Trading; a Singaporean who worked for Intertek, a British-listed company specialising in quality and quantity assurance, including for fuel products; and three Vietnamese nationals who allegedly received stolen property aboard ships.