Police investigating after threat made at north London high school

London police vehicles are seen at A. B. Lucas Secondary School in London, Ont. on March 10, 2026. (Lauren Stallone/CTV News London)

An investigation is underway following the discovery of a threat written in graffiti at A. B. Lucas Secondary School on Tuesday.

According to a social media post, London police are currently investigating a report of a threat at A. B. Lucas Secondary School.

Police say the threat was in the form of graffiti-style property damage.

There are no reported injuries and no known risk to public safety.

Police remain on scene and say updates will be provided as appropriate.