Trucks move across the bridge linking North Korea with the Chinese border city of Dandong in this March 3, 2016 file photo. REUTERS/Megha Rajagopalan

BEIJING (Reuters) - China exported no oil products to North Korea in December except for a tiny cargo of jet fuel, data showed on Thursday, the latest sign that Beijing has kept up pressure on its isolated neighbor amid tensions over its nuclear and missile program.

The country sold 5 tonnes of jet fuel to North Korea, but did not send any other oil products, marking the third straight month of no diesel, gasoline or fuel oil shipments, data from the General Administration of Customs showed.

China is the main source of North Korea’s fuel.

The breakdown by product comes after data earlier this week showed China’s imports from North Korea plunged last month to their lowest level in dollar terms since at least the start of 2014.

Beijing also imported no iron ore, coal or lead from North Korea in December, the third full month of the latest United Nations trade sanctions aimed at persuading Pyongyang to abandon its ballistic missile and nuclear weapons programs.