AN 11-year-old boy threatened another pupil with a knife at a Dorset school, police have confirmed.

Officers were called to Lockyers Middle School after another boy, also aged 11, was threatened with what his mother described as a four-bladed Swiss Army knife.

The mother of the threatened boy has spoken out after her son was sent back to lessons following the incident at the Corfe Mullen school on Wednesday morning.

Dorset Police were alerted to the incident at 5.43pm, by a call from a woman. But the education authority has said “immediate and appropriate action” had been taken.

Concerned mum Natacha Marchese said her son Devantae Marchese came home distressed at the end of the day and told her about the drama.

“He said a boy walked up to him in the playground with a Swiss Army knife with about four blades saying ‘I’m going to stab you’,” Mrs Marchese said.

“Other children saw it. My son is uneasy. And I’ve been up all night worrying about him.”

A police spokesman said officers were talking to the families of both boys and arranging to interview one of them.

Officers believe the boy brought the blade into school himself, she added.

She said: “Police were called at 5.43pm on Wednesday from a woman on a landline reporting a threat to an 11-year-old boy.

“A bladed instrument had been brought into the school and a threat had been made. Officers attended.”

Mrs Marchese said: “No one notified me while he was in school. When Devantae told me I picked up the phone straight away.

“The head teacher said he had called the mother of the other boy in, confiscated the knife and spoken to the police.

“Something’s missing there. If I’d known I would have gone in and got my son and taken him home.”

A Dorset County Council spokesperson said: “Following information that a blade had been brought into Lockyer's Middle School, the school took immediate and appropriate action to safeguard the welfare of children and staff by contacting the police, confiscating the blade and excluding a pupil.

“Following advice from the police, the pupil has been excluded pending further police enquiries. The head teacher has at all times followed the advice of police and county council officers.”