The blast reportedly left hundreds of others injured.

Nearly 300 people have been admitted to hospitals for treatment with officials saying many of them are in 'critical condition'.

The cause of the explosion is still not known.

It comes as the Armenian government said 13,350 refugees crossed into the country from the enclave, reports BBC.

Human Rights Ombudsman Gegham Stepanyan earlier wrote on X: "As a result of the explosion in the fuel warehouse, the number of injured exceeds 200."

"The health condition of the majority is severe or extremely severe.
The medical capacities of NK are not enough," he said.

Since Azerbaijan's seizure of Nagorno-Karabakh last week, thousands of people have left the area after the Armenian government in Yerevan announced plans to move those made homeless by the fighting, BBC reported.