The Japan Football Association on Thursday handed 17 Urawa Reds supporters indefinite bans from domestic matches following their violent conduct at an Aug. 2 Emperor's Cup last-16 game.
Urawa lost 3-0 away to Nagoya Grampus at CS Asset Minato Soccer Stadium in a night game before a section of their supporters rioted, with the JFA later confirming their disorderly behavior after reviewing video.
Urawa have already banned 32 fans for the foreseeable future after they entered an off-limit area, while issuing stern warnings to 45 others.
After video showed a security guard getting pushed over, at least one Nagoya fan being assaulted and barriers destroyed, the JFA issued severe penalties to 17 participants and a five-match ban to another.
"It's extremely regrettable that the match-watching environment was disrupted by some mindless supporters," JFA Chairman Kozo Tashima said.
"They significantly disturb the entire footballing community's drive to spread an environment in which fans can enjoy football safely and securely."
The JFA will discuss sanctions for Reds at a disciplinary committee meeting in mid-September.
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