German Interior Minister Hans-Peter Friedrich has decried recent racist attacks over Twitter against Turkish-German football player Mesut Özil, describing the comments as "revolting," private broadcaster NTV reported on its website.
Friedrich told German
daily Neuen Osnabrücker that the comments were only "the tip of the iceberg."
“There is a chance that these people may leave clues behind as to their identities," Friedrich said. "But the present online data systems won't allow us to track them."
Friedrich said he was also ashamed by the racist chants that occurred during Germany's match against Denmark.
During last Sunday's game, someone on a personal account slammed the German
international by tweeting: "Özil is absolutely not German. A piece of paper won't change your roots."
Within minutes hundreds of Twitter users began following the account.
"Only pure-blooded Germans should play on the German
team," the user continued to say.
The account was shut down after that.