On November 28th, unknown perpetrators tagged a staircase of a Viennese municipal building with threats. The words "Death to Christians", "the house will soon belong to us and than the whole world" and glorifications of the Islamist terror attack in Vienna were smeared on the walls. Moreover, the graffitis said: May "Allah" have "mercy" on the 20-year-old assassin who murdered four people on November 2nd. The police was informed and a complaint was filed. The LVT (State Office for the Protection of the Constitution and Fight against Terrorism) has started investigations.