Explosion at chemical complex in German city of Leverkusen
Germany's Federal Office for Civil Protection and Disaster Assistance classified the explosion as "an extreme threat" and asked residents to stay inside and keep windows and doors closed, German news agency dpa reported.
They said on Twitter that firefighters and pollution detection vans had been deployed.
Police could not immediately be reached for further details.
Daily Koelner Stadt-Anzeiger reported that the explosion took place in the Buerrig neigbborhood at a garbage incineration plant.
Leverkusen is home to Bayer, one of Germany's biggest chemical companies.
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