BERLIN, Dec. 28 (Xinhuanet) -- German authorities revealed on Wednesday that they had banned a group suspected of harboring Islamic extremists in the southern state of Bavaria.

    "We will not tolerate organizations that are set up aggressively against the constitutional order and call openly for the use of violence," state Interior Minister Guenther Beckstein said.

    On Wednesday, Security officials confiscated and searched a house belonging to the group of "Multi-Kultur-Hous Ulm" in the southern city of Ulm, freezing its account at a bank in Stuttgart.     

    The Multi-Kultur Hous (Multi-Culture-House) had been under surveillance after tip offs showed it had allowed Islamic extremists to use the building to preach hatred and call for "holywar".

    Beckstein said officials had also seized instructions for the manufacture of explosives.

    The ban was the latest in a series of moves against Islamic extremists in and around the towns of Neu-Ulm in Bavaria and Ulm in neighboring Baden-Wuerttemberg state.

    Authorities first carried out raids in January against the group over suspicions it had formed a terrorist organization and again in February for suspected business offenses. Enditem