Roberto Carlos regrets giving shirt to Ultra Sur fan

Roberto Carlos says he regrets giving his shirt to the former leader of Real Madrid's radical Ultra Sur fans moments after the group displayed an anti-immigration banner.

"I made a mistake of presenting the shirt at that moment," the Brazilian fullback told Punto Radio late on Wednesday. "I wasn't aware of the controversial events that had occurred during the game."

The Real Madrid leftback gave former Ultra Sur leader Jose Luis Ochaita his shirt following his side's 5-0 victory over Racing Santander on Saturday.

Ochaita was banned from stadiums for three years in 1998 for trying to attack the referee in a Real Madrid-Barcelona basketball game and was among eight Ultras Sur arrested in Germany in the same year for displaying Nazi flags and swastikas prior to a Champions League match.

Spanish daily El Pais said that the shirt was to be used in a raffle to raise funds to subsidise trips made by the group's members to away matches.

During the match the group had displayed a large banner behind one of the goals reading: "They invade us, they kill us. Justice for Spain, justice for Manu."

Manu refers to a youth who was fatally stabbed in a Madrid suburb, reportedly by a Dominican.

Spain's government-run Anti-violence Commission has recommended that Real be fined 3,001 euros for not preventing the entry and display of the banner, which was later removed by a security official from the club.

"I've suffered a lot of racist abuse at many grounds," said Roberto Carlos. "Of course I think they were wrong to display the banner, but I didn't see it when I was playing."

"I'm glad the club removed the banner and proud of the fact that the rest of the crowd at the Bernabeu whistled until they had done it. But I only found out all of that later from the newspapers."

"I've suffered because of the colour of my skin and I would never get involved in this sort of thing."

Members of the Ultra Sur have been involved in incidents of racist abuse at the Bernabeu on several occasions this season.

The club was fined 9,780 euros ($12,550) after television pictures showed members of the group insulting visiting black players and making Nazi salutes in a Champions League match against Bayer Leverkusen in November.

The presidents of the three Madrid-based Primera Liga clubs Real, Atletico and Getafe -- all of which have been fined for racist abuse by some of their fans this season -- are due to sign an anti-racist protocol with the regional government later on Thursday.