The Chinese media called the cause of train crash in Hunan Province.

The cause of train crash in southern China, where the victims were three men, was a failure of one of the brake system of passenger trains, informs Associated Press referring to the Chinese media.
A collision of two passenger trains took place on 28 June at 21:30 Moscow time in the city of Changsha, the capital of Hunan Province. A subsequent to the city of Shenchzhen passenger refused brakes, and he went to meet coming from Shenchzhenya passenger trains.
As a result of the collision car trains off the rails and destroyed the wall is located near the railway line of two houses. One of them killed a woman and her child, the circumstances of the death of the third victim's information is not available.
As a result of the collision injured 63 people. In critical condition are two of the victims. The investigation is continuing, but the agency notes that more detailed information from the Chinese officials is not yet possible.