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A pig's head has been left on the construction site of a planned Turkish Islamic high school in Vienna, in what is believed to be an Islamophobic attack.
Images posted on Twitter appeared to show a pig's head impaled on scaffolding.
Police spokesman Patrick Maierhofer confirmed that the images were authentic and said they were taken "in the Islamic centre in Florian-Hedorfer street. We are investigating and have referred the case to the Federal Office for the Protection of the Constitution."