The death toll from the deadly collapse of a residential building in the city of Magnitogorsk, located in Russia's Ural Federal District, has grown to 37 people, a spokesperson of the Russian Emergencies Ministry told Sputnik on Thursday.

The tragedy in Magnitogorsk took place on Monday when what authorities suggested was a natural gas leak tore through a bloc of the 10-storey building, leaving dozens of apartments destroyed and damaged.

Earlier in the day, the Iranian Foreign Ministry’s spokesman, Bahram Qassemi, extended his condolences to the Russian government and people over the deadly incident.

"Iranian Foreign Ministry Spokesman Bahram Qassemi has sent a message of condolence after a blast in a building in central Russia left tens of people dead and injured. In the message on Wednesday, the spokesman expressed deep regret over the incident in Magnitogorsk and extended sympathy to the government and nation of Russia as well as the families of the victims of this tragic incident," the Foreign Ministry said in a press release.

On Wednesday, Latvian Foreign Minister Edgars Rinkevics also extended his condolences to the families of the victims.