We would like to reassure people that this has been an isolated incident and there is no ongoing risk to pupils or staff at the school.
The situation is under control and officers, including safer schools officers and members of the local neighbourhood policing team, are currently at the school and are liaising closely with staff. The rest of the school is continuing to operate as normal and we would ask that parents do not attend the site unless directly requested to do so by the school.
Our enquiries are at a very early stage but the full circumstances of this incident will obviously be the subject of a full and thorough investigation."
More top news
They're looking to reunite a number of watches and pieces of jewellery with Frank, whose name is engraved on the back of one of the watches
Rangi Chase has been left out the Castleford side to face Leeds in Thursday's Super League derby following an internal investigation
Kim Leadbeater has spoken in depth for the first time about her family's loss and how their lives have been changed forever by her death