Three North Korean workers suffered from carbon monoxide poisoning during a fire in the Russian city of Irkutsk on Saturday, Russian emergency services confirmed to NK News on Tuesday.

The fire occurred at Irkutsk State University on the second floor of a building where the university’s gym is located, according to the Russian Emergencies Ministry’s Siberian division.

“23 persons extinguished a fire by means of 7 technical units. Firemen managed to save three citizens of the DPRK during this event,” the press office of the Siberian Division told NK News.

“(An) Ambulance crew took the injured people to the