BERLIN, Jan 23 (Reuters) – German police said on Sunday they arrested a 21-year-old man on suspicion of planning a militant attack, and linked his case to that of a second suspect in Vienna.

Special forces police arrested the man and a woman during a raid on an apartment in the western city of Neuss on Saturday, a spokesman for the Criminal Investigation Office (LKA) said. The woman, identified in media reports as the man’s wife, has been released.

German authorities have been on high alert since a failed asylum seeker from Tunisia rammed a truck into a Christmas market last month in Berlin, killing 12 people.

Germany’s Focus magazine said the man arrested on Saturday was planning a bomb attack on police and soldiers. Both he and the suspect detained in Austria had experimented with materials to create explosives in the Neuss apartment, it said.

The Neuss arrest followed a tipoff from Austrian authorities, said Frank Scheulen, spokesman for the LKA in the state of North Rhine-Westphalia.

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