Ethnic Armenians in Azerbaijan's breakaway region of Nagorno-Karabakh agreed to a Russian proposal for a ceasefire on Wednesday, 24 hours after Azerbaijan began an offensive to take control of the enclave that killed dozens and injured hundreds.
The separatist Armenian forces in Karabakh said Azerbaijan had broken through their lines and seized a number of strategic road junctions.
The self-styled "Republic of Artsakh" said that in such circumstances, it had no choice but to cease hostilities from 1:00 pm local time on Wednesday.
"The authorities of the Republic of Artsakh accept the proposal of the command of the Russian peacekeeping contingent to cease fire," it said.
"With the mediation of the command of the Russian peacekeeping contingent stationed in Nagorno-Karabakh, an agreement was reached on the complete cessation of hostilities from 13:00 on September 20."
Azerbaijan began its operation against Nagorno-Karabakh on Tuesday after some of its troops were killed in what Baku said were attacks from the mountainous region, which Azerbaijan had blockaded for nine months.
Nagorno-Karabakh is recognised internationally as part of Azerbaijan.


Shooting at Australia's Bondi Beach kills 12
Police hold person of interest after Brown University shooting leaves two dead
Hamas says Israel's killing of senior commander threatens ceasefire
Ukraine's Zelenskyy ditches NATO ambition ahead of peace talks
Thailand declares curfew along coast as Cambodia border fighting spreads
India tightens pollution curbs as Delhi's air quality worsens
'Peace is not far away' says Erdogan after Putin meeting
Belarus frees Nobel winner, protest figures as US lifts more sanctions
