Gas leak considered reason for blast in Russia's Ivanovo

"Preliminary analysis of the situation and primary investigative activities currently give basis to consider a gas leak as the main version," the statement of the Committee said.

According to the local emergencies service, the search and rescue operation, involving over 350 rescuers, has been finished.

At least five people died as a result of the gas explosion in the Russian city of Ivanovo, including one child, Sputnik reported.

At least one person killed in an explosion of natural gas in a residential house in Russia's city of Ivanovo on Sunday, while five more people are still missing, a spokesman for Ivanovo's emergencies service said, Sputnik International reported.

Up to eight people could be trapped under rubble in Russia's city of Ivanovo after explosion, a spokesman for Ivanovo's emergencies service said Sunday, Sputnik International reported.

Earlier in the day, natural gas exploded in the residential house, causing its partial destruction.

"According to preliminary estimates, up to eight people could be trapped under rubble," the spokesman said.