TOKYO -- The shocking deaths of more than 150 revelers in Seoul has reminded the world of the risks of excessive crowding, putting officials in another Asian capital known for Halloween hordes, Tokyo, on high alert.
As costumed revelers head to Shibuya, expert stresses need for risk awareness

People flood the street in Tokyo's Shibuya district on Oct. 31: Police in the city are on high alert, eager to avoid the overcrowding that led to a deadly stampede in Seoul on Oct. 29. © Kyodo
TOKYO -- The shocking deaths of more than 150 revelers in Seoul has reminded the world of the risks of excessive crowding, putting officials in another Asian capital known for Halloween hordes, Tokyo, on high alert.