More than a dozen Aegean Marine Petroleum Network employees — including members of senior management — orchestrated a half-billion dollar fraud scheme with an unnamed former affiliate as the primary beneficiary, the bunkering company has alleged.

Following the results of an audit carried out by independent legal counsel hired by the New York-listed bunkering giant, Aegean Marine said up to $300m of its assets were funneled to OilTank Engineering & Consulting after a 2010 deal to build an oil terminal in Fujairah.