Shinzo AbeShinzo Abe shooting reawakens Japan to 'lone wolf' threat
Few red flags make solo crimes harder to predict and prevent
Tetsuya Yamagami, the man suspected of assassinating Shinzo Abe, is not known to be affiliated with any specific groups. © Kyodo
RYOMA KASHIWAGI, KAORU YAMADA and HITOSHI ITO, Nikkei staff writers
TOKYO -- The assassination of former Prime Minister Shinzo Abe by a gunman apparently acting on his own underscores the difficulty of preventing such attacks in Japan, where police still focus on organizations despite notable lone-wolf incidents in recent years.