A member of the public helped a shop manager restrain an armed raider in Portsmouth.
The knifeman burst into Copnor Mini Market in Copnor Road at about 1900 GMT on Tuesday.
He attacked the manager but a passer-by came to his aid and helped subdue and restrain the raider. The manager suffered minor injuries.
A 35-year-old man from Southsea was arrested by police and is being questioned in custody.