Oct 15 (Reuters) - Hungary and Russia's Gazprom

are negotiating a deal for additional gas supplies

next year to Budapest, Hungarian Foreign Minister Peter

Szijjarto told Russia's RIA news agency in remarks published on

Tuesday.

"We have already signed one (additional agreement) for the

last quarter of this year, which covers additional volumes at a

competitive price. We are currently negotiating a deal for next

year," Szijjarto told RIA.

The Russian energy giant said last week, without providing

detail, that it signed a memorandum with Hungary on a possible

increase in sales of Russian gas.

Szijjarto told RIA that the memorandum includes a

provision on additional agreements to long-term contracts for

future years, which guarantee price competitiveness.

Hungary and Gapzrom also signed a deal last week that

allows them to fully utilise the TurkStream gas pipeline.

That deal, Szijjarto told RIA, enables Budapest increase

the volumes purchased under "all commercial contracts".

Russia currently exports its natural gas to Europe via

two routes: a Soviet-built pipeline which crosses Ukraine, and

the TurkStream pipeline to Turkey which runs along the bed of

the Black Sea. Russia's gas transit deal with Ukraine is due to

expire at the end of the year.

Separately, Szijjarto told RIA that Budapest will veto

European Union sanctions on Russia if the exemption for Hungary

to purchase Russian oil is cancelled.

"Sanctions are usually reviewed every six months. And

while sanctions are in place, these exceptions must remain in

force, because otherwise we will veto the sanctions," Szijjarto

said.

Hungarian energy group MOL reached a deal in

September for the continual supply of Russian oil through

Belarus and Ukraine via the Druzhba pipeline, after Kyiv's

addition of Russia's Lukoil to a sanctions list in

June led the Hungarian government to voice concerns about

security of supply.

After Russia launched its full-scale invasion on Ukraine

in February 2022, the EU adopted a package of sanctions against

Moscow that included an import ban on all Russian seaborne crude

oil and petroleum products with some limited exemptions.