South Korea has confirmed an additional case of cholera, raising the number of people infected with the waterborne disease here to three, officials said Wednesday.

A 64-year-old man residing on the southern island of Geoje is presumed to have contracted the disease from eating seafood earlier this month, the South Gyeongsang Provincial Government said.

The regional government said the man received treatment at an intensive unit of a hospital in the southern port city of Busan after complaining of a stomachache.

The patient remains in stable condition but is under quarantine, officials said, noting that he had no contact with the previously infected patients.

Last week, the Korea Centers for Disease Control and Prevention announced the first case of the disease after a 59-year-old man in the southern city of Gwangju was diagnosed, the first case in 15 years.

All three people consumed seafood at different restaurants on Geoje Island, officials said.