German Jews' concerns of a migrant influx was echoed on Monday by the Jewish Community organization (IKG) in neighboring Austria, another key country on the migrant trail facing a record number of asylum seekers this year.

"The question is how many refugees can a country accept. We have reached the end of our capacities," IKG president Oskar Deutsch told journalists in Vienna on Monday.

He also warned of the risk of growing anti-Semitism as many of the migrants came from Middle Eastern countries.