Distribution of Asylum Seekers in Germany

Mr de Maiziere called for tough action against those who attacked asylum seekers. Some attacks were on empty buildings, but others targeted hostels already occupied by migrants.

Those responsible "must be made to understand that they are committing unacceptable offences: assault, attempted murder, arson," he said.

'Security issue'

In a statement on Friday the Bavarian government threatened to go to the German Constitutional Court to compel the federal government to impose a cap on asylum seekers.