An investigation has been launched after a pupil support assistant posted a video appearing to mock a child in class.
Highland Council is carrying out an internal investigation after the clip, which was uploaded to a messaging app, was reported.
Furious parents last night demanded the local authority take a stronger stance against cyber-bullying.
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The clip is believed to include audio in which the child is talking, and the video is captioned “will you shut up?”
A Highland Council spokesman said the local authority was aware of the matter and that an internal investigation was under way.