CCTV footage of Sheffield armed raids released
Footage has been released of armed raids carried out at five supermarkets and shops across Sheffield.
South Yorkshire Police said two robbers had struck at businesses in Bradway, Whirlow, Norton Lees and Bents Green between 8 January and 2 February.
During one raid at Sainsbury's, in Bradway Road, staff said they were threatened with a hammer, while employees at the Spar shop in Ecclesall Road South said a knife had been used.
Police have appealed for witnesses.
Det Insp Richard Partridge said: "Fortunately, there have been no injuries sustained by anyone during any of the incidents, however, those involved are extremely shaken, distressed and frightened and we are not prepared to accept this."
The first robbery took place on 8 January at Sainsbury's, in Bradway Road, at about 21:00 GMT.
Mr Partridge said two men entered the store, threatened staff with a hammer and demanded money. They fled with about £1,000 in cash.
The second raid happened on 27 January at the Spar shop, in Ecclesall Road South. The robbers stole about £200 after threatening staff with a knife.
The following day robbers struck again at Sainsbury's, in Bradway Road, taking about £200
On 31 January the Co-op, in Derbyshire Lane, was targeted. The robbers stole about £525.
The final raid happened at the Spar shop, in Ringinglow Road, on 2 February when robbers took about £300 after threatening staff.
Mr Partridge said: "We are determined to apprehend the two men who are responsible for creating unrest in our town."