Town halls in several German cities were evacuated on Tuesday after threats, in some cases bomb threats, were received by email overnight, a number of police forces said.
"A threat against the city of Augsburg has been received, the town hall has been cleared, we are investigating," tweeted police in the southern city.
Police posted similar tweets from western Neunkirchen and Kaiserslautern, eastern Chemnitz, central Goettingen and northern Rendsburg.
Most forces said sniffer dogs were searching for explosives and local traffic was disrupted.
Bild daily cited one police force as saying the threat level was unchanged.
In January, courts in three German cities received bomb threats but no explosions occurred.
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