New letter Dortmund announces more terror to

dortmund - A new letter from the attack on the team of Borussia Dortmund is claimed warns of more terror on April 22 in Cologne.

The mail that stands out right wing extremists, came to the editors of the German newspaper Tagesspiegel. The writing is taken seriously by the authorities and investigated further.

The writer compares himself with Adolf Hitler and agitates against multiculturalism. The attack in Dortmund would have been a final warning on April 22 and 'Blood will flow,' as it reads. 'The group in Cologne is ready. '

On 22 April in the German town of the party congress of the anti-immigrant party AFD (Alternative for Germany) site. Tens of thousands of demonstrators are expected.

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On Friday it was announced that German security note that right-wing extremists and football hooligans were involved in the bombing.

The attack possibly served as revenge for an earlier clash between hooligans from the club and the supporters of the football club RB Leipzig, said sources close to the investigation by the German news magazine Focus.

According to the Tagesspiegel, the police also note that foreign security services were behind the attack.

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Over the three letters were found at the scene of the attack and indicating that Muslim extremists are behind the violence, there is considerable doubt. It seems that the perpetrators were trying to Muslim extremists to blame in the shoes, including the Süddeutsche Zeitung reported.

The writer of the letter did indeed act in the name of Allah, but otherwise the text seems atypical for Islamist State. It would also have established safety experts that Germany supposedly the mother tongue of the author. Moreover, let jihadists no letters behind usually.

The police have no new suspects in sight. Two men who were arrested initially did not appear to be involved in the attack.

The Public Ministry reported only that the investigations continue relentlessly during Easter. According to spokeswoman Frauke Köhler is not clear in which direction to search. She did not say whether the forensic examination of the firing mechanism of the three explosive devices, the type of explosives and left letters has new leads.

Chancellor Angela Merkel sees in some states failures in the fight against terrorism. ' Unfortunately, the level of legislation say about it in the individual states, '' she said in the papers of the media group Funke.

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The attack Tuesday hit defender Marc Bartra wounded in the arm. He can not take action for a month.