Forty-six people were injured when two bottles of what's thought to be acid fell onto a busy street in Hong Kong.
The incident happened on Saturday in a crowded pedestrian zone in the Mong Kok area of Kowloon.
Police suspect the bottles were dropped deliberately from a high-rise building, an official told a local newpaper.
Victims cried out as the liquid damaged skin and burned holes in clothing, witnesses said. Those taken to hospital were released the same day.
Police searched the building, but no arrests were made following the incident late on Saturday.
A man who saw one of the bottles land told the South China Morning Post:
"It looked like an ordinary bottle of water, and the crowd began to disperse. Then I saw people with red faces and eyes in pain," he said. Src:bbc news