A youth, 27, stabbed his mate of the same age to death in the playground of a primary school in Kangnam District, Seoul on Nov. 2.

There was an uproar in Ryangjae-dong in Socho District by a man in his thirties as he threatened with a lethal weapon the passers-by on Oct. 29. A man in his forties threatened his friend to pay debts with a lethal weapon in Sinsa-dong of Kangnam District on Oct. 14.

At the police box at Yongdungpho Railway Station a person was stabbed to death on Sept. 20.

The crimes of the kinds are prevalent among teenagers.