The fire broke out around 1 a.m. at the Mountain B nightclub, a one-story building in the Sattahip district of Chonburi province, southeast of Bangkok, police said.
Sattahip is located about 30 km south of Pattaya City, a popular tourist destination.
Police Colonel Wuttipong Somjai told CNN that the fire broke out during a live music performance.
He said the burns ranged from “mild to severe” and the investigation into the cause of the fire is ongoing.
According to him, all the victims were citizens of Thailand.
This is an evolving story.