Elysee Palace sources said that French President Emmanuel Macron spoke with the leaders of Armenia and Azerbaijan and called for an end to fighting in the Nagorno-Karabakh conflict zone, dpa reported.

France will send medical aid to the injured, with further details to be announced in coming days.

Macron held a previously unannounced meeting with Armenian President Armen Sarkissian in Paris, and said that only a diplomatic solution to the crisis would be acceptable.

For the negotiations to resume, however, there must be a "calmer climate," he said, according to Elysee sources.

Macron also had a phone call with Armenian Prime Minister Nikol Pashinyan and Azerbaijani President Ilham Aliyev.

At the Valdai Discussion Club in Moscow on Thursday, Russian President Vladimir Putin had estimated that almost 5,000 people have been killed so far in the fighting between the two parties in the Karabakh conflict zone.