* Nagorno-Karabakh authorities deny report
* Tensions rising with Armenia-Turkey thaw
(Updates with Turkish reaction)
By Afet Mehtiyeva
BAKU, Sept 10 (Reuters) - Azeri media said five Armenian soldiers were killed on Thursday in a clash with Azerbaijan's forces near the disputed region of Nagorno-Karabakh, but the rebel territory dismissed the report.
The Azerbaijan Defence Ministry declined to comment.
Tensions in the region are rising as Armenia and close Azeri ally Turkey make progress towards opening their joint border and establishing diplomatic relations, angering oil-producing Azerbaijan.
Azerbaijan's ANS Press said the fight took place in the Agdam district, next to Nagorno-Karabakh, which threw off Azeri rule in the early 1990s with Armenian backing.
A spokesman for the Nagorno-Karabakh Defence Ministry said the report was "Azeri propaganda".
Agdam is one of seven Azeri districts surrounding Nagorno-Karabakh and is held by Armenian forces.
Clashes are common between forces manning the frontline. The last fatal exchange was in January, when Azerbaijan, which supplies oil and gas to the West, said it had killed three Armenian soldiers.
Turkey, which is on the verge of an historic deal to restore ties with Armenia, said it was seeking details of the report. "If the report would be confirmed, it would become a source of concern," Foreign Ministry spokesman Burak Ozugergin said.
Christian ethnic Armenians, backed by Armenia, fought a war in the 1990s to end mainly Muslim Azerbaijan's control over mountainous Nagorno-Karabakh. An estimated 30,000 people were killed and a peace accord has never been reached.
Mediators from the United States, France and Russia say they are close to a breakthrough in negotiations between Armenian President Serzh Sarksyan and his Azeri counterpart Ilham Aliyev.
Turkey closed its frontier with Armenia in 1993 in solidarity with Azerbaijan, which now fears losing leverage over Armenia in the conflict over Nagorno-Karabakh if the border is reopened.
Turkey and Armenia said last month they had agreed to establish diplomatic ties and open the border. Their presidents are due to sign the accords in mid-October, before submitting them to the Turkish and Armenian parliaments for approval.
Under the deal, the border should reopen within two months of ratification, possibly by New Year. (Additional reporting by Hasmik Mkrtchyan in Yerevan, Matt Robinson in Tbilisi and Zerin Elci in Ankara; writing by Matt Robinson; Editing by Mark Trevelyan)
'''W Górskim Karabachu doszło do wymiany ognia między siłami azerskimi i armeńskimi w wyniku czego poległo 5 żołnierzy Armenii.'''

Walka wybuchła azerskim w dystrykcie Agdam przy granicy z Górskim Karabachem. Dotychczas obie strony nie ustosunkowały się do wydarzenia.

Górski Karabach to terytorium leżące w Azerbejdżanie zajęte przez wojska armeńskie podczas wojny między sąsiadami toczącej się w latach 1988-1994. Nadal sporny jest przede wszystkim status międzynarodowy zarówno Górskiego Karabachu jak i korytarza, który łączy go z Armenią.