From Tucson, Ariz.: Safety concerns have been raised at schools due to a viral social media trend. A letter was sent to parents about this trend, which features a character from a well-known children's book series in a sinister way. The trend includes altered images and videos accompanied by threatening language.

This has sparked concerns across the country. Officials are warning people to be aware of this trend, which has been circulating in communities.

Further details about the trend and the warning issued by a school district are available from the source.