The announcement was made by a Henan provincial team who investigated the fire, which took place on December 15 last year in Changyuan County, Henan, killing 12 people and injuring 28 others.
County fire chief Zhi Xiaoqiang, Deputy police chief Zhao Gewei and four others from the county police, tourism and fire authorities were arrested on charges of dereliction of duty in January, state-run Xinhua news agency quoted a local government statement today.
The investigation team concluded that the Huangguan karaoke bar had never obtained a fire safety permit until it was closed following the fire.
Karaoke business owner Kong Weikai was also arrested following the deadly blaze.