Azerbaijan on Thursday made a "strong protest" to Russia over weapons transfers it said Moscow had made to Armenia in violation of United Nations resolutions.
"The Azerbaijani foreign ministry voices strong protest in connection with the transfer of arms to Armenia and calls on Russia to take all necessary steps to avert the consequences," the ministry said in a statement.
On Wednesday Russia's defense ministry denied Azerbaijani media reports that Moscow had supplied Yerevan with $800 million worth of tanks, armored personnel carriers, rockets, grenade launchers and ammunition via a Russian army base in Armenia, Interfax news agency reported.
"There have been no supplies of Russian weapons to Armenia. The reports alleging this are untrue," Russian defense ministry spokesman Alexander Drobyshevsky said.
Azerbaijan said the alleged weapons transfers violated UN resolutions aimed at preventing a renewal of the conflict over Nagorny Karabakh, where Armenia-backed separatists wrested control from Azerbaijan's authorities in a war after the 1991 Soviet collapse.
"The transfer of weapons serves to strengthen the military potential of Armenia, which has occupied a part of Azerbaijani territory," the Azerbaijani ministry said.