Azerbaijan will destroy military targets in Armenia from which Armenia is firing on Azeri cities, an aide to Azeri President Ilham Aliyev said on Sunday.
Azerbaijan said earlier that a civilian had been killed in its second city of Ganja by Armenian rocket fire. Armenia denied the attack.
Turkey condemned what it called Armenian attacks on the Azeri city of Ganja on Sunday and repeated it backs Azerbaijan's right to self-defence within its internationally-recognized borders.
"The attacks of Armenia targeting the civilians in Ganja... are a new manifestation of Armenia's unlawful attitude. We condemn these attacks," the Turkish Foreign Ministry said.
Ankara supports Baku and has rejected calls made by other nations for an immediate ceasefire.
Azerbaijan said earlier that Armenian forces had shelled its second city of Ganja in an escalation of the war in the South Caucasus that began a week ago, while Armenia denied it had directed fire "of any kind" towards Azerbaijan.