Königs Wusterhausen (dpa / bb) - A citizens' office of the AfD in Königs Wusterhausen (Dahme-Spreewald) has been smeared with a liquid.

An unknown liquid had been applied to the outer window sill of the office on Maxim-Gorki-Straße, which could not be determined immediately, as the police department South announced on Wednesday.

A quick test by the fire brigade ruled out that the substance was dangerous.

Remnants of the substance had been secured as evidence.

The police are investigating property damage.