- Dozens of families may have been in the building, a South Korean official says
- North Korea state media report "casualties" but don't provide any specific numbers
- The accident took place at an apartment building under construction in Pyongyang
- KCNA: Leader Kim Jong Un "sat up all night, feeling painful" after hearing the news
An apartment building in the North Korean capital collapsed in what state media described as a "serious accident" that caused an unspecified number of casualties.
The unusual, apologetic report Sunday from the North's state-run Korean Central News Agency (KCNA) said the collapse took place Tuesday at the construction site of an apartment building in Phyongchon, a central district of Pyongyang.
"The accident claimed casualties," the agency reported without providing details on the number of people killed and injured. Rescue efforts were abandoned on Saturday, the agency said.
A South Korean government official said the building had 23 floors, estimating that as many as 92 families might have been living inside. It's common for people to move into North Korean buildings before construction is completed, the official said.
The South Korean government closely monitors activities in North Korea.