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Germany is tightening security at airports and train stations after receiving evidence of planned attacks in the next two weeks, the interior ministry has said.

"The security situation in Germany has become more serious," Thomas de Maiziere, Germany's interior minister said on Wednesday.

The German government won't say how it knows it's at risk of attack, but security has been stepped up in all the usual places to prove how concerned the country is about this new threat.

The authorities in Berlin claim the new information came to light in the aftermath of the foiled plan, hatched in Yemen, to bomb a cargo plane.

Al Jazeera's Laurence Lee reports.

Source: Al Jazeera