Armenia and Azerbaijan agreed on Saturday to a ceasefire and to begin "substantive talks" over the breakaway region of Nagorno-Karabakh after nearly two weeks of fierce clashes.
Bitter fighting in the central Asian region has claimed hundreds of lives, forced thousands to flee, and stirred fears of a full-blown war that could suck in regional powers Turkey and Russia.
Speaking after 11 hours of Moscow-mediated talks between Armenia and Azerbaijan, Russian Foreign Minister Sergei Lavrov said the warring sides had agreed to a ceasefire from "12 hours 00 minutes on October 10 on humanitarian grounds."
It was not immediately clear whether the pause in fighting would come into effect at noon in Moscow or the local time in Karabakh.
During the ceasefire -- mediated by the International Committee of the Red Cross -- the parties will exchange bodies and prisoners, Lavrov said, reading from a statement.
"Concrete parameters of the ceasefire will be agreed separately," the statement added.
Russia's top diplomat also said that Armenia and Azerbaijan agreed to start negotiating a peaceful solution to the territorial dispute.
"Azerbaijan and Armenia begin substantive negotiations with the purpose of achieving a peaceful settlement as soon as possible," Lavrov told reporters, adding that such talks would be mediated by France, Russia and the US.
Renewed fighting over Karabakh -- an ethnic Armenian region of Azerbaijan that broke from Baku's control in a devastating war in the early 1990s -- has claimed some 400 lives and forced thousands of people from their homes.
The heavy clashes erupted late last month, with both sides blaming the other for the biggest outbreak in violence since a 1994 ceasefire left the status of Karabakh in limbo.
Azerbaijani President Ilham Aliyev, who has repeatedly vowed to use his military to retake the breakaway province, said earlier that the talks represented a historic opportunity for Armenia.
"We are giving Armenia a chance to settle the conflict peacefully," he said. "This is their last chance."
Armenia's Prime Minister Nikol Pashinyan said his country was "ready for the resumption of the peace process" led by international brokers.
Heavy clashes continued into Friday, Armenian and Azerbaijani defense officials said, with further civilian deaths reported, even after Russian President Vladimir Putin announced the Moscow meeting and appealed for a ceasefire on humanitarian grounds.
Shelling started again in Stepanakert, the provincial capital of Karabakh, where an AFP journalist heard several explosions and saw the remains of a rocket in a crater next to a cemetery for dead soldiers.
A spokesman for the Armenian defense ministry told reporters on Friday that fighting continued despite the negotiations in Moscow.
