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Large-scale operation in the Chempark in Leverkusen (July 27)
Photo: Tim Oelbermann / imago images / Xinhua
After the explosion in a Leverkusen waste incineration plant, the public prosecutor's office initiated investigations into suspected negligent homicide.
In addition, because of negligent causing of an explosive is being investigated, said the authority.
The allegation is directed against unknown.
A spokesman said the task was to see if human error could have led to the explosion.
An investigation team has also been set up at the Cologne police.
At least two people were killed in the huge explosion on Tuesday morning in the so-called Chempark.
In the case of five other missing persons, the operating company Currenta assumes that they will no longer be found alive.
31 other people were injured.
The cause of the accident that had occurred in the tank farm of the disposal center was initially unclear.
According to the investigators, entering the area is “still only possible to a very limited extent”. Drones would be used to get an overview. Several experts supported the investigation. "The deployment of the fire brigade and police at the scene of the fire will most likely continue for several days," it said.
