A rescuer takes part in a rescue operation after a central heating pipe breakthrough at "Ocean Plaza" mall in the central district of Ukrainian capital of Kiev on January 13, 2020. (Photo by Sergei SUPINSKY / AFP)

A man carries a wounded woman during a rescue operation after a central heating pipe breakthrough at "Ocean Plaza" mall in the central district of Ukrainian capital of Kiev on January 13, 2020. (Photo by Sergei SUPINSKY / AFP)

A rescuer carries a wounded woman during a rescue operation after a central heating pipe breakthrough at "Ocean Plaza" mall in the central district of Ukrainian capital of Kiev on January 13, 2020. (Photo by Sergei SUPINSKY / AFP)

A man carries a wounded woman during a rescue operation after a central heating pipe breakthrough at "Ocean Plaz" mall in the central district of Ukrainian capital of Kiev on January 13, 2020. (Photo by Sergei SUPINSKY / AFP)

A wounded woman is evacuated during a rescue operation after a central heating pipe breakthrough at "Ocean Plaza" mall in the central district of Ukrainian capital of Kiev on January 13, 2020. - At least 10 people were injured as a result of burns with hot water, and the visitors of the shopping mall were evacuated. (Photo by Sergei SUPINSKY / AFP)

A man takes a picture of a bus which fell into a hole after a central heating pipe breakthrough at "Ocean Plaza" mall in the central district of Ukrainian capital of Kiev on January 13, 2020. - At least 10 people were injured as a result of burns with hot water, and the visitors of the shopping mall were evacuated. (Photo by Sergei SUPINSKY / AFP)

Pedestrians and cars make their way through hot water after a central heating pipe breakthrough at "Ocean Plaza" mall in the central district of Ukrainian capital of Kiev on January 13, 2020. - At least 10 people were injured as a result of burns with hot water, and the visitors of the shopping mall were evacuated. (Photo by Sergei SUPINSKY / AFP)

Pedestrians and cars make their way through hot water after a central heating pipe breakthrough at "Ocean Plaza" mall in the central district of Ukrainian capital of Kiev on January 13, 2020. - At least 10 people were injured as a result of burns with hot water, and the visitors of the shopping mall were evacuated. (Photo by Sergei SUPINSKY / AFP)

Pedestrians and cars make their way through hot water after a central heating pipe breakthrough at "Ocean Plaza" mall in the central district of Ukrainian capital of Kiev on January 13, 2020. - At least 10 people were injured as a result of burns with hot water, and the visitors of the shopping mall were evacuated. (Photo by Sergei SUPINSKY / AFP)

A rescuer takes part in a rescue operation after a central heating pipe breakthrough at "Ocean Plaza" mall in the central district of Ukrainian capital of Kiev on January 13, 2020. - At least 10 people were injured as a result of burns with hot water, and the visitors of the shopping mall were evacuated. (Photo by Sergei SUPINSKY / AFP)