A skyscraper of more than 70 storeys has been evacuated after it started to shake, sending shoppers scrambling for safety in the southern Chinese city of Shenzhen.
Local authorities do not yet know what caused the 300m (980ft) SEG Plaza building to wobble.
No earthquakes were recorded at the time. An investigation is under way.
The 20-year-old building houses an electronics market and offices.
It stands in the heart of Shenzhen, a sprawling city of more than 12 million people known for its shopping and booming tech industry.
the local government of Shenzhen’s Futian district, where SEG Plaza is located, received reports of shaking from staff inside the building at 12:31pm local time.
In a later statement, the local government said a preliminary investigation found no cracks in the ground surrounding the building and no damage to pieces of outer wall.