German Federal Interior Ministry

Illustration: Unsplash/Thomas William

"The investigation will be deepened," Helmut Teichmann, undersecretary at German Federal Interior Ministry, said in response to a German MP's questions in the Bundestag, according to Deutsche Welle Turkish.

The two countries have stepped up joint efforts this week to stop Albanian migrants heading for Germany after more than 20,000 arrived over the past few months.

On Wednesday, about 70 asylum-seekers from Albania landed at Tirana International Airport after being deported from Germany.