Police have vowed to take a "zero tolerance" approach to football hooliganism at home during the World Cup.

Extra police officers will patrol Brighton and Hove during the key matches of the month-long tournament starting on June 9.

Officers will deal with any public disorder offences and work with staff in pubs and clubs to deter trouble.

Troublemakers have been warned they face jail.

The move follows a successful operation during Euro 2004 when extra officers from across the county were on stand-by in the larger Sussex towns.

About 50 extra officers will be available in Brighton and Hove as required.

Gatwick, which is anticipating processing a high number of fans travelling to Germany, will have similar back-up.

Brighton and Hove's Commander in Chief, Superintendent Jeremy Paine, said anyone intent on causing trouble was unwelcome and extra police officers would provide reassurance and curb any disorder.

He said: "Our main aim is to make this a safe and troublefree tournament. The majority of supporters are law-abiding and peaceful but there are a few who use events such as the World Cup as an excuse to cause trouble. Nobody wants that and, on the public's behalf, we won't put up with it.

"There will be extra high visibility patrols in the city, supported by resources from headquarters in a co-ordinated effort to keep everyone safe.

"We want people to come into the city to watch the games and enjoy themselves. But anyone who thinks they can come and engage in mindless, alcohol-fuelled violence can think again. We will deal with you in the strongest way possible and we will pursue custodial punishments."

A Gatwick spokesman said: "We have been working with Sussex Police and the whole airport community, including airlines and customs."

Last November ten hooligans claiming to be Brighton fans were jailed for a total of 21 years after battling with Leeds fans outside The Old Pump House in The Lanes in October 2004.