The rear of the double decker plunged into the five-metre-deep hole, while the front was lifted above the ground. Another bus nearby also tilted.
No one was injured in the incident in Tseung Kwan O.
Separately, an elderly woman died in a traffic accident on Thursday in Yuen Long that involved two garbage trucks.
The 85-year-old was found trapped under one of the vehicles on Tin Ha Road at around 6am, and was certified dead at the scene.
Two drivers, aged 56 and 60, were arrested on suspicion of causing death by dangerous driving.
Last updated: 2022-01-27 HKT 12:08