Police are appealing for witnesses following a robbery at a shop in North Tyneside.
It happened at 9.49pm on Sunday, at the NISA store on Tynemouth Road in Wallsend.
A man entered the store armed with a knife and threatened staff. He left with an undisclosed quantity of cash.
No one was injured during the robbery, but staff were shaken by the incident.
Shortly afterwards, a man was detained by two members of the public. Police were called and a 44-year-old man was arrested on suspicion of robbery and is currently in custody.
Anyone who was in the area and who may have seen or heard anything suspicious is asked to contact police on 101, quoting log number 1265 of 17/07/16, or ring the independent charity Crimestoppers on 0800 555111.