Halifax RCMP have charged two people after a robbery and stabbing at a Cole Harbour high school last week.

Thursday afternoon, police and EHS were called to the Cole Harbour school after a stabbing on school property.

Police said, following an argument, an 18-year-old from Mineville was stabbed in the leg with a knife by a 17-year-old.

By the time police arrived, the suspects had fled the scene.

On Friday, three suspects turned themselves in to police and were arrested.

A 17-year-old boy is facing charges of robbery, assault with a weapon, assault causing bodily harm and possession of a weapon for a dangerous purpose. A 20-year-old woman was charged with robbery and another male was released without charges.

Police say they have been unable to find a fourth suspect, an 18-year-old woman.

The group and the victim know each other, police said.

Police said the victim had minor injuries that were treated at the scene.