SEOUL, South Korea — The number of people injured when South Korean fighter jets accidentally dropped bombs on a civilian area has increased to 29 from 15, the National Defense Ministry said Friday.

Those injured include 15 civilians and 14 military personnel, the ministry said. Seven civilians and two soldiers remain hospitalized, including two civilians classified as seriously injured, while 20 other people have been treated and discharged, it said.

The accident occurred Thursday during…