Hamilton police have charged a 38-year-old woman and a 17-year-old boy after a fight in a high school parking lot.
They say the incident happened on Tuesday afternoon at St. Thomas More Catholic Secondary School.
Police allege the woman, the mother of a student at the school, had come to the building carrying an expandable baton.
They allege the mother was upset about a previous altercation between her child and the other teen.
Police say the mother got into a verbal fight with the teen, who was allegedly holding a knife, but officers arrived before anyone was injured.
Both the woman and the teen are charged with possession of a weapon for a dangerous purpose.
Our Morning Update and Evening Update newsletters are written by Globe editors, giving you a concise summary of the day’s most important headlines. Sign up today.