[a ship leaked & more than 25000 litres of nbsp; fuel flowed into the Serbian section of the Danube] according to Serbian media local time on the 19th, the Serbian Ministry of Environmental Protection said that a Bulgarian-flagged ship leaked 25000 to 30, 000 litres of fuel in the upper Serbian section of the Danube. Serbian environmental monitoring and other relevant institutions are already in a state of alert, and Serbian procuratorial organs have also ordered water sampling and testing around the accident.