At 2:56 p.m. on June 19, a fire broke out in a six story residential building in Liwan District, Guangzhou city. The fire started on the sixth floor. Due to the fierce fire, the trapped people hid in the balcony security net, during which adults have been using their bodies to block the fire for children. By 5 p.m., the open fire had been put out, causing one death and two injuries. What is the cause of the fire?
Two victims of the fire in Huangsha residential area were sent to Guangzhou Red Cross Society hospital for treatment. CCTV reporter interviewed the families of the injured in the hospital. The family members said that the household of the fire unit was a family of three. His wife was killed in the fire, and her husband was seriously injured and was out of danger of life and needed to be hospitalized in the ICU of the burn department. Her 4-year-old daughter suffered a serious head injury and needed medical treatment, so she is in stable condition.