The boy ran off but was pursued by officers and detained. A rucksack recovered from nearby was found to contain a large hunting knife.
The knife has been seized by officers and a 16-year-old boy was arrested on suspicion of possession of a bladed article. He has since been released under investigation.
‘I am pleased the quick work of officers has seen another potential weapon removed from circulation and I ask parents, teachers and anyone who works with young people to tell us if they have any concerns and help us keep communities safe.’