An explosion at a petrol station in Russia's Caspian Sea region of Dagestan killed 10 people on Friday, including two children, the emergencies ministry said, Paralel.Az reports citing Reuters.

A ministry statement on the Telegram messaging app said 11 people were injured in the blast outside the regional capital of Makhachkala. It said rescue teams had been recovering bodies from under rubble and brought a fire under control.

A health ministry official told Russian news agencies that eight people were being treated in hospital, including one in serious condition.

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An explosion tore through a service station in Russia's Caucasus republic of Dagestan on Friday, killing five people and injuring three others, the emergency situations ministry said, Paralel.Az reports citing Barron's.

"The station's building is destroyed. The technical area and the cafeteria are burning over a surface of 500 square metres," the ministry said on Telegram, without giving a cause.

Almost 120 rescuers were working at the scene south of Dagestan's capital Makhachkala, it added.