Chinese refined oil product exports to North Korea haven’t included fuels like gasoline and diesel for over a year, analysis of Beijing’s customs data shows.

If accurate, the numbers represent an apparently unannounced fuel cut off that has run from mid-2017 until the start of this year — at least in theory.

“It seems likely that oil product supplies are reaching the DPRK anyway,” David Von Hippel, a senior researcher at the Nautilus Institute for Security and Sustainability told NK Pro.

China’s customs data collated by the ITC Trade Map provides