Belgian farmers, angered by rising costs, the European Union’s environmental policy and cheap food imports, plan to block access roads to the North Sea container port of Zeebrugge from Tuesday, financial daily De Tijd reported, as cited by Reuters.

Protesters plan to block access to the North Sea port, the country’s second-largest, for at least 36 hours starting at 2 p.m. CET (1 p.m. GMT), the newspaper said, citing organizers and police, adding that the road blockade may last until Wednesday evening.

“The police received information about an operation in the port of Zeebrugge,” said a spokesman for the port authority. He said it was not yet clear what the operation entailed.

Farmers also disrupted traffic near the Dutch border on the E19 highway on Tuesday morning as a convoy of tractors headed for the port city of Antwerp, public broadcaster RTBF reported.

On Tuesday, Belgian Prime Minister Alexandre de Croo should meet with farmers’ associations.

Farmers across Europe, including Germany, Poland, Romania and France, have demonstrated in recent weeks against what they say is excessive bureaucracy, high fuel prices and unfair competition from the European Union’s liberal trade policies.

Belgium’s protest movement was fueled by similar outrage in France, where angry farmers set up dozens of roadblocks and increasingly disrupted traffic around Paris, putting pressure on the government.

In search of a way out of the crisis, French President Emmanuel Macron told the European Commission that it is impossible to complete negotiations on a trade agreement with the South American bloc MERCOSUR.

On Monday, Belgian farmers blocked highways in southern Belgium and parked tractors outside the EU parliament in Brussels.