Police are appealing for witnesses who may have seen an armed robber immediately after he held up a convenience store.
It's thought the man may have been in the area of Spring Valley Industrial estate at around 3.30pm on Monday afternoon.
He was wearing a light top and dark tracksuit bottoms, and is aged between 14 and 19.
He entered Farm Hill Stores wearing a black hat and stocking mask, brandishing a small knife. He escaped with a large amount of cash.
Sergeant Jenny Steele says someone must have seen him:
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