Russian apartment collapse death toll rises to 37

This photo provided by the Russian Emergency Situations Ministry taken from tv footage shows Emergency Situations employees work at the scene of a collapsed section of an apartment building, in Magnitigorsk, a city of 400,000 about 1,400 kilometers (870 miles) southeast of Moscow, Russia, Wednesday, Jan. 2, 2019. Search crews have pulled more bodies from a huge pile of rubble at a collapsed Russian apartment building. (Russian Ministry for Emergency Situations photo via AP)

MOSCOW — The death toll from the collapse of a Russian apartment building has risen to 37 after more bodies were discovered by crews searching the huge pile of concrete rubble.

State news agency Tass cited an emergencies ministry official on Thursday as saying four people who lived in the collapsed section of the building in Magnitogorsk remain unaccounted for.

The collapse on Monday followed an explosion that officials said likely was caused by a gas leak.

An 11-month-old boy was extracted from the wreckage alive on Tuesday and was flown to Moscow for treatment of injuries including frostbite. Nighttime temperatures in the city 1,400 kilometers (870 miles) southeast of Moscow have fallen to about minus 20 degrees Celsius (minus 4 Fahrenheit). /kga