The Truth About Cars reports the investigation may center around the $540,000 paid as consulting fees to Latin America Tug Holding NV, a company Muller owns. It's possible that the Swedish authorities believe the Saab executives were using the tug boat company as a tax haven, and that the automaker should have paid taxes and social security contributions on the money. Muller has not been charged.
Meanwhile, Muller is defending his earnings in a new interview with Automotive News. Having come under fire for his $773,000 salary at Saab, the Spyker CEO said his pay was commensurate with an executive running a company with 4,000 employees.