The report is from the Financial Times, gated, but Reuters summarise:
Volkswagen’s China chief marketing officer and head of product strategy, Jochen Sengpiehl, was deported back to Germany after being detained in China for about 10 days
allegedly tested positive for drugs after a holiday abroad
There is a little more at that link above.
This article was written by Eamonn Sheridan at www.forexlive.com.