BERLIN - About 1,000 police raided dozens of buildings across Germany early on Thursday in a crackdown on radical Salafist Islamists suspected of plotting against the state.

Announcing the crackdown, Interior Minister Hans-Peter Friedrich said he had banned one of the Salafists' groups called the Millatu Ibrahim and said the raids may unearth evidence that would allow the outlawing of two other associations.

"(The Millatu Ibrahim group) works against our constitutional order," he told reporters.

German authorities have recently stepped up their monitoring of ultra-conservative Salafist groups following a series of violent clashes with police.

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