DNA testing has been completed for all of the crash victims and experts are checking the results to ensure their accuracy, the Yan'an municipal government said.

The accident happened in Yan'an at around 2 a.m. Sunday, when a double-decker sleeper bus crashed into a methanol-loaded tanker and caught fire on the Baotou-Maoming expressway.

The 39-seat bus was full at the time of the crash, with three survivors sent to local hospitals for treatment. Two of the survivors, who were seriously injured, are currently in stable condition. Another slightly-injured passenger is receiving further treatment.

A compensation plan for the victims' relatives has been drafted and the compensation will be issued soon, the local government said.

The State Council has sent an investigation team to Yan'an to look into the accident, said officials with the State Administration of Work Safety.