Tottenham have vowed to support the police investigation into homophobic and racist chanting directed at Portsmouth's Sol Campbell.
The former Spurs defender suffered the abuse from away fans during the Premier League match at Fratton Park in September, and Hampshire Police have released CCTV pictures of 16 suspects.
Tottenham's safety officer Sue Tilling said: "The club does not tolerate any form of abusive or discriminatory chanting and we would ask fans with any information to please come forward and assist the police with their investigation into this matter."
She added: "In order to ensure that matchdays are enjoyable for everyone we shall not hesitate to ban, indefinitely, supporters whose behaviour is proven to be unacceptable."
Campbell has been targeted by some Spurs supporters since he left White Hart Lane for arch-rivals Arsenal in 2001.
In October, Spurs vowed to ban for life any fan found guilty of racist of homophobic behaviour.
Tilling added: "The conduct of our supporters is taken very, very seriously and our fans are normally well behaved both at home and away grounds."
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