Threatening graffiti at Chur school prompts police investigation

Police opened an investigation after threatening graffiti was found on a toilet at a secondary school in Chur, Switzerland, on Thursday morning.

The message was seen as a threat, but authorities did not describe its contents.

Police and school officials took safety measures, while the school day continued normally.

Authorities said no one was ever in danger, and most pupils and teachers learned about the investigation through school notices.

Parents were contacted before noon and again in the afternoon.

An outsider may have left the message, because the toilet was also accessible to people who did not attend the school.

The investigation was still under way on Thursday evening, and the city said it would support police inquiries.