Anchor: A kindergarten building in southern Seoul has tilted after a retaining wall at a nearby construction site collapsed. No casualties were reported but the incident led to the evacuation of some 50 people at one point. 
Our Bae Joo-yon has more. 

Report: According to local authorities, the three-story Sangdo Kindergarten in the southern district of Dongjak tilted about ten degrees after the wall designed to prevent subsidence caved in at around 11:20 p.m. Thursday.

There were no casualties as the building was empty at the time but some 50 local residents had to evacuate and take shelter at a community center and hotel on Thursday night before returning home on Friday morning. 

Firefighters and police dispatched rescue teams and investigators to the site as soon as they received the report, restricting access to the building and cutting off water, gas and power. 

In a briefing held nearby the site of the incident, Dongjak district authorities said on Friday that the parts of the kindergarten that have suffered serious damage will be removed and the remainder of the building will be reinforced after conducting thorough safety checks. 

Authorities said the foundation of the retaining wall likely weakened after underlying earth became weak when water flowed into trenches in the construction site following heavy downpours. 

Authorities said it is imperative to fill trenches with soil as it assessed that no sudden collapse is further expected but gradual sinking is likely.

Police have launched an internal investigation into what caused the incident. 
Bae Joo-yon, KBS World Radio News.