German police have raided more than 30 premises linked to suspected far-right extremists in Berlin and three other eastern German states.
The raids were mainly centred on Brandenburg state and the region around Cottbus, about 100 kilometers (62 miles) south-east of the capital.
According to Brandenburg police, the investigation focuses on about 20 people with ties to Germany’s hooligan, martial arts and right-wing extremist scenes.
Cottbus has a comparatively large neo-Nazi scene affiliated to the city’s main football team, Energie Cottbus.
The raids come a day after authorities in Austria searched dozens of homes in several states, seizing weapons and large amounts of banned propaganda material.