Stock Photo - 22 September 2020, Lower Saxony, Hanover: Christian Vidal, head of the chemistry department at the State Office of Criminal Investigation (LKA) of Lower Saxony, stands in front of a mobile laboratory of the LKA Lower Saxony. Threat letters with poisons, explosives, radioactive radiation: In an emergency, police officers want to know what they are dealing with as quickly as possible. The LKA Niedersachsen manages this with a mobile laboratory. Photo: Julian Stratenschulte/dpa. - Hanover/Lower Saxony/Germany

Stock Photo: 22 September 2020, Lower Saxony, Hanover: Christian Vidal, head of the chemistry department at the State Office of Criminal Investigation (LKA) of Lower Saxony.

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