Bulgaria's gas-network operator, Bulgartransgaz, says it has halted the transport of natural gas to Romania, Serbia, and Hungary after a pipeline rupture.
Bulgartransgaz said on November 1 that an emergency occurred early in the morning near the northeastern village of Vetrino and crews were trying to replace a section of the gas pipeline "as soon as possible."
Gas transport to Romania was automatically cut off and later partially restored, but supply to Serbia and Hungary had been suspended, Bulgartransgaz said.
Bulgaria transports Russian gas through its gas network to Serbia and Hungary.
In Bosnia-Herzegovina, Sarajevogas, the main gas distributor for the capital, announced gas supplies would be rationed and service suspended to consumers able to use alternative sources energy.