The four suspects—two 15-year-old boys, a 17-year-old girl and an 18-year-old man—were taken into custody on Saturday, the Tokyo Metropolitan Police Department said.

东京警察厅表示，四名嫌疑人，包括两名15岁的男孩、一名17岁的女孩和一名18岁的男子已于周六被拘留。

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City police said the man was armed with a revolver.

市警方说那名男子持有一支左轮手枪。

《柯林斯英汉双解大词典》

Police said the man was a danger to the public.

警方说该名男子对公众是个危险。

《牛津词典》

Another man,who said he was at the cemetery, told an Iranian opposition website that police were chasing young people who were chanting "death to the dictator", while others were "throwing flowers at the police,asking them to support them."

VOA: standard.2009.07.30

That's the updated version of the man police said killed four people, apparently randomly, then holed up for nearly a day in an abandoned bar called Glory Days before dying in a gunfight with police who tried to root him out.

WSJ: Competing versions emerge of NY man who killed 4

In the statement, the Australian Federal Police said that the arrested man was an IT professional who used his position in an IT company to access sensitive information from clients, including government agencies.

BBC: Australia police arrest hacker group LulzSec 'leader'

Two women who went to the aid of a taxi driver who was being attacked were punched and kicked by the man, police have said.

BBC: Perth taxi passenger attacks driver and two women