The recovery raised to 23 the death toll from the fire that destroyed lithium battery maker Aricell's plant in Hwaseong, 45 kilometers south of Seoul, the previous day, Yonhap news agency reported.
Eight other people were also injured, two of them seriously.
Shortly before noon, rescuers removed the additional body, believed to belong to a worker still missing, reportedly beneath collapsed iron beams and other debris.
Around 100 people and two rescue dogs were mobilized during the day for the search, which continues from the previous day.
All of the deceased victims were found on the second floor of the plant, where the fire started, while they were inspecting and packaging finished battery products.
Seventeen of the victims were Chinese, while five were Korean and one was Laotian, police said, updating firefighters' initial count of two Koreans.
A team of police, firefighters, forensic workers and other government officials began a joint investigation at the fire scene around noon to determine the cause of the accident.
The police have requested autopsies on the bodies to determine the cause of death.
So far only the identity of two Koreans among the victims has been confirmed, as the bodies of the others were severely destroyed in the fire and are unrecognizable.
"We intend to confirm the identities of the victims by collecting DNA from their bodies," said a police officer, adding that the process may take some time because most of them were foreigners.
Following the investigation, rescuers plan to resume their search inside the burned plant to see if any other victims remain.
Police also arrested the director of the battery company and four other people to be investigated on charges related to the fatal accident, including professional negligence resulting in death and injury.
They were also all banned from traveling abroad while police investigated who should be responsible for the disaster.
According to initial findings from fire authorities, Monday's fire started in a storage and packaging area for primary lithium batteries supplied to the military for use in FM walkie-talkies.
Lithium is considered a relatively stable material and does not require specific legal regulations for its handling in South Korea.
However, lithium can cause sparks if it comes into contact with rusty iron in the presence of flammable gas in the air, so it needs to be stored in a separate, dry space.
Eight other people were also injured, two of them seriously.
Shortly before noon, rescuers removed the additional body, believed to belong to a worker still missing, reportedly beneath collapsed iron beams and other debris.
Around 100 people and two rescue dogs were mobilized during the day for the search, which continues from the previous day.
All of the deceased victims were found on the second floor of the plant, where the fire started, while they were inspecting and packaging finished battery products.
Seventeen of the victims were Chinese, while five were Korean and one was Laotian, police said, updating firefighters' initial count of two Koreans.
A team of police, firefighters, forensic workers and other government officials began a joint investigation at the fire scene around noon to determine the cause of the accident.
The police have requested autopsies on the bodies to determine the cause of death.
So far only the identity of two Koreans among the victims has been confirmed, as the bodies of the others were severely destroyed in the fire and are unrecognizable.
"We intend to confirm the identities of the victims by collecting DNA from their bodies," said a police officer, adding that the process may take some time because most of them were foreigners.
Following the investigation, rescuers plan to resume their search inside the burned plant to see if any other victims remain.
Police also arrested the director of the battery company and four other people to be investigated on charges related to the fatal accident, including professional negligence resulting in death and injury.
They were also all banned from traveling abroad while police investigated who should be responsible for the disaster.
According to initial findings from fire authorities, Monday's fire started in a storage and packaging area for primary lithium batteries supplied to the military for use in FM walkie-talkies.
Lithium is considered a relatively stable material and does not require specific legal regulations for its handling in South Korea.
However, lithium can cause sparks if it comes into contact with rusty iron in the presence of flammable gas in the air, so it needs to be stored in a separate, dry space.
