According to Artka Beglaryan, ombudsman of the unrecognised Republic of Artsakh (Nagorno-Karabakh), Azerbaijan attacked a residential area of Stepanakert in the early hours of Friday with a heavy rocket.
He added that there's no data on casualties or destruction so far.
The frozen conflict between Armenia and Azerbaijan along the contact line of the Nagorno-Karabakh region flared up on 27 September, with Yerevan and Baku accusing each other of unleashing hostilities. Armenia has declared martial law and - for the first time - general mobilisation, while partial mobilisation has been introduced in Azerbaijan.
The international community has strongly condemned the escalation and called on parties to settle their differences via dialogue, while Turkey has pledged its full support for Azerbaijan.
Yerevan and Baku have signed three ceasefire agreements since the initial escalation in September, but all of them were broken soon after entering into force.
Follow Sputnik feed to find out more.