The gas network operators of Bulgaria, Romania, Hungary and Slovakia have proposed shipping additional natural gas supply pledged by Azerbaijan to Europe, Bulgarian President Rumen Radev said on Friday.

Speaking at a meeting with Azerbaijani President Ilham Aliev, Radev said the four European Union countries had offered their networks to allow for a faster shipment of Azeri gas to Europe.

The European Commission July signed a memorandum of understanding with Azerbaijan to double imports of Azerbaijani natural gas to at least 20 billion cubic metres annually by 2027.