A traffic policeman examines an accident site in Yizhang County, central China's Hunan Province, June 26, 2016. A fire that reduced a tour bus into charred frames on Sunday morning has killed at least 35 people, including two children, in Hunan Province, local authorities said. The accident happened at about 10:20 a.m., when the bus crashed into the guardrail on a highway in Yizhang. (Xinhua/Long Hongtao)

CHANGSHA, June 27 -- Two people who were seriously burnt in a fatal bus fire in central China's Hunan Province on Sunday are in a critical condition.

The incident happened at about 10:20 a.m., when a bus carrying 55 people crashed into the guardrail on a highway in Yizhang County. An ensuing oil leak caused the fire, according to the local government.

The blaze killed 35 people, including two children. Eleven people were hospitalized.

Seven of them who were seriously injured are receiving treatment in the No.1 People's Hospital of Chenzhou City while four who sustained minor injuries are hospitalized in Yizhang, said Tao Cheng, a medical expert who participated in the rescue work.

One of the people in a critical condition is a diabetic woman in her 50s who sustained burns to 90 percent of her body. The other is a woman with burns to half her body, said Tao.

The other five seriously injured people are in a stable condition. They suffered fractures, trauma and inhalation injuries.

Doctors at the hospital have made tailored treatment schemes for each patient and will provide psychological counseling for them, Tao said.

She also told Xinhua that among the injured, a 51-year-old man told her that the fire started at the back of the bus. Sitting at the front of the vehicle, he broke a window with a fire extinguisher and jumped out. He only suffered minor injuries and a tibial fracture.