[Osem]

Germany does not know the whereabouts of 130,000 asylum seekers who were registered last year, officials say.

The migrants did not appear at reception centres to which they had been directed, the government said in a written reply to a question.
This may be because they have moved to a different country, gone underground or registered several times.

http://www.bbc.co.uk/news/world-europe-35667858