First of all, the bus was servicing route number 22, and because of roadwork, it cancelled a certain stop along the route. At the stop before that cancelled stop, the bus driver notify passengers that such arrangement have been made, however certain passenger is no aware of it. Later, when the passenger find out that the bus have went pass her destination, she demanded the bus to immediately let her off, however there are no bus stop along the road and thus the driver ignored her request.
10:03:32 - The passenger walk up from her seat and stand next to the driver, continually blaming the driver. The driver initially tried to explain the situation but their languages have become more and more heated as time went by and started to vocally attack each other
10:08:49 - The passenger hit the head of the driver using her right hand with phone
10:08:50 - The driver hit back, released his right hand from the wheel, hitting the neck of the passenger. The passenger attempted to hit the driver again but was blocked by the arm of the driver
10:08:51 - The driver take his right hand back and then made a quick turn to the left using the withdrawn right hand and caused the bus to change its direction, crashing with the car in opposite direction and fall down from the bridge.
Recovered camera footage from the bus: https://www.youtube.com/watch?v=UXfsSwb4D5o
According to state media report, both the incidental passenger and driver would have been guilty for their actions. The passenger endangered the safety of the operating vehicles, while the bus driver haven't recognize his counteraction against the passenger would threaten the safety of driving and severely violated the code of conduct of bus driver, and both of them have also damaged the public safety.