Germany is refusing more and more migrants entry at its southern border, sending a few hundred back to Austria every day since the beginning of the month, Austrian police said on Monday.

The Iraqi Embassy in Berlin is meanwhile issuing passports for Iraqis to return home.

Attacks on women in Cologne and other German cities on New Year's Eve have prompted hundreds of complaints, with police suspicion resting on asylum seekers, putting pressure on German Chancellor Angela Merkel and her open-door migrant policy.