Ukraine and Romania have signed an agreement to link their gas transmission systems, in order to ship gas from Ukraine through Romania to Bulgaria and in the reverse direction, Ukrtransgaz said in a statement.

The agreement covers the gas pipeline route used to transport gas from Ukraine through Romania to Bulgaria via the Negru Voda 1 interconnection point.

"The system operators plan to ensure continuous, uninterrupted gas transportation capacity in the direction from Ukraine to Bulgaria and uninterrupted capacity to transport gas in reverse," the statement says.