Armenian and Azerbaijani sources say there have been several breaches of the cease fire in the last hours. Both sides also report use of heavy weapons.
EU Council President Donald Tusk says in Tbilisi "Georgia really matters to us". Tusk met Georgian leaders in Tbilisi and visited the administrative boundary with South Ossetia.
Speculation increases that Russia is preparing a new initiative on Karabakh as Azerbaijani Foreign Minister visits Moscow for the second time in as many months.
Defence Minister Zakir Hasanov has ordered military exercises involving land and air forces, but the Armenian side say the situation is "under control".
23 servicemen died in the city of Omsk when a building housing servicemen at a training centre for Russian Airborne Forces collapsed on Sunday. 42 people were found under the rubble.
The Foreign Minister said that whilst Azerbaijan's position was very constructive, any concessions will have to be made within the framework of the country's territorial integrity.