Police are searching for two men who threatened a supermarket worker and stole cigarettes and cash from a Northampton shop.
The offenders went into the Co-operative shop in Rothersthorpe Road at around 6am on Saturday.
The men were carrying a duvet cover and threatened a member of staff.
They then jumped over the counter, stole a substantial number of cigarettes from behind the till, which they put in the duvet cover, forced open the till and took cash.
The first offender is described as a slim white man wearing a red hooded top, with the hood up, and grey jeans.
The other is described as a white man of medium build, wearing a black hooded top, again with the hood up.
The men are believed to have travelled on a Yamaha motorbike with silver mudguards and to have left in the direction of Briar Hill.
Witnesses to this incident, or anyone with information, can call Northamptonshire Police on 101 or alternatively, information can be given anonymously to Crimestoppers on 0800 555 111.