Moscow, Aug 3 (AP) A total of 10 people died after an apartment block in Russia's Ural Mountains partially collapsed following a gas explosion earlier this week, Russia's Emergency Ministry said on Saturday, announcing the completion of a search and rescue operation after two days.

Five of those killed were children, the ministry said. Another 15 people, including seven children, have been rescued, according to officials.

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Photos published by Russian news agencies this week showed a large part of the five-story prefab building in the industrial city of Nizhny Tagil levelled.

According to Russia's Emergencies Ministry, the explosion of a natural gas tank was the likely cause. Residents of neighbouring blocks told Russian news outlets that they heard a loud blast immediately before the collapse on Thursday.

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The rescue operation involved heavy equipment and over 550 emergency workers, the ministry said.

Russian law enforcement launched a criminal probe into the incident, suspecting a health and safety failure.

Authorities in Nizhny Tagil declared a day of mourning on Saturday. (AP)

(The above story is verified and authored by Press Trust of India (PTI) staff. PTI, India’s premier news agency, employs more than 400 journalists and 500 stringers to cover almost every district and small town in India.. The views appearing in the above post do not reflect the opinions of LatestLY)