A Brazilian teenager has been arrested in Japan last Friday on suspicion of membership of an international hacking group.

Japanese police believe the unnamed 17 year-old is an active member of a gang of Web site defacers called Cyber Lords, which is blamed for the defacement in recent months of 1,032 Web sites in 33 countries.

Japanese investigators have tracked the group's activities since March, following a tip-off from South Korean police via Interpol. Sites in Japan, the US, Taiwan, the Netherlands and South Korea have been hit by the group, according to Tokoyo police, the Japan Times reports.

The arrested teenager is suspected of hacking into the Web sites of a computer services firm, a private high school in Tokoyo and Kyoto University Hospital since September last year.

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