A man armed with a knife has robbed a shop in Derry.
Police say a member of the public challenged the robber as he made off with a sum of cash from the shop in Drumleck Gardens and have appealed for information.
The robbery took place at around 10pm on Sunday night (March 24).
“The telephone number to ring is 0845 600 8000. Alternatively, if someone would prefer to provide information without giving their details, they can contact the independent charity Crimestoppers and speak to them anonymously on 0800 555 111,” a PSNI spokeswoman said.