Area Police
Approximately 50 cars have been covered with what appears to be human blood in the German city of Hanau near Frankfurt, according to police.
Vehicles, building surfaces and postboxes were defaced, in some cases with Nazi symbols, they reported in a statement.
Officers say they were alerted during the night on Wednesday, when a man noticed that a vehicle in the Lamboy neighborhood of Hanau had been covered with a reddish fluid.
The fluid had been applied in the shape of a swastika, they stated.
Police then discovered many other marked cars and house walls in the adjacent neighborhood.
These symbols are banned in Germany under laws banning the public display of Nazi-era symbols.
Police state preliminary tests indicate the substance was likely human blood.
"Currently there is no clue as to its source; authorities are currently not informed of any physical harm in association with the event," they added.
Municipal representatives said they were trying "to solve the case" and have asked to the public for information.
A high-ranking official commented the incident left him speechless and required to be solved promptly.
"This event hits the core of Hanau and reawakens the pain of the right-wing violent incident in 2020," he posted on a platform, recalling the murder of nine individuals by a shooter focusing on individuals of immigrant origin in February 2020.