HANGZHOU, Jan. 17-- Thirteen out of 16 victims in a shoe factory blaze in east China's Zhejiang Province have been identified through DNA tests by police, local government said Friday.

The dead include nine workers from Guizhou Province, one each from Yunnan Province and Chongqing Municipality and two from Anhui Province. The remaining three who were killed have not been identified.

The fire broke out on Tuesday afternoon at Taizhou Dadong Shoes Co., Ltd. in Wenling City. Sixteen people, including six men and 10 women, were killed, and five others injured. More than 20 people were rescued.

Two owners and one manager of the shoe factory were detained on Wednesday. The cause of the fire is being investigated.

The Wenling government launched a thorough work safety overhaul on Thursday to prevent similar industrial accidents.