Drone footage shot on Monday reveals the extent of the damage caused by a fatal gas explosion in a nine-storey residential building in the city of Shakhty in the Rostov Region.
EMERCOM said in a statement that four people remain missing, while seven have been rescued and 140 people have been evacuated. One woman is confirmed dead.
In total, 366 people and 65 units of machinery are involved in the operation at the site.
The blast damaged four apartments on the eighth and ninth storeys of the tower block. A criminal investigation has been opened into the incident.