The Yonhap news agency in South Korea said the fire lasted for about 16 hours on Friday morning.
There were no immediate reports of any deaths.
Hundreds of residents extinguished the fire, while workers rescued many, who fled to the roof or other places.
South Korea’s Ministry of Interior and Security said at least 88 people were treated for minor injuries such as scratches or mild smoking. Yonhap reported the number of injured as 93, including three seriously injured.
Authorities are investigating the cause of the fire, which they said began late Thursday evening from a balcony in one of the lower floors and spread to the exterior of the building amidst strong winds.
According to Yonhap, eyewitnesses said that an outbreak of fire is also expected from the insulation of the building’s outer walls.