Local Police
Roughly 50 vehicles have been marked with what appears to be human blood in the Germany's city of Hanau near Frankfurt, as reported by police.
Vehicles, walls and postal boxes were vandalized, sometimes with prohibited symbols, they reported in a release.
Law enforcement say they were alerted late on Wednesday evening, when a man noticed that a automobile in the Lamboy neighborhood of Hanau had been marked with a reddish liquid.
The fluid had been placed in the form of a swastika, they reported.
Police then discovered numerous other smeared automobiles and house walls in the surrounding area.
Nazi symbols are prohibited in Germany under legislation outlawing the public display of Nazi symbols.
Law enforcement say preliminary tests show the substance was likely blood from a person.
"There is still no clue as to its origin; officials are presently not informed of any physical harm in connection with the occurrence," they added.
City officials announced they were trying "to solve the incident" and have appealed to the public for tips.
A high-ranking political figure commented the vandalism rendered him stunned and required to be resolved quickly.
"This act affects the center of Hanau and reawakens the pain of the extremist violent incident half a decade ago," he posted on a platform, recalling the murder of nine individuals by a gunman aiming at individuals of immigrant origin in five years prior.