POLICE are hunting four raiders armed with knives who threatened staff and stole a "substantial" sum of cash from a Rugeley Co-op store.
The offenders were lying in wait as staff were opening up at the store on Queensway at 5.45am on Monday March 31.
The four staff members were threatened with a knife and locked in a toilet while the offenders broke into the shop's safe and stole a substantial amount of cash.
Chief Inspector Steve Morrey, Local Policing Commander for the Cannock Chase district said: "Although shocked and distressed by what has happened, the shop's employees were unharmed during the robbery.
"Officers from CID have commenced a full investigation and I would urge anyone who has information regarding the robbery or who may have witnessed anything to please contact us on the number below.
"I would like to remind our communities that this type of offence is thankfully uncommon."
A Central England Co-op spokeswoman added: "Colleagues are very shaken but otherwise unharmed. We are working closely and as a priority with police to support them in their investigation.”Anyone who has any information is asked to ring 101 quoting incident 64 of March 31, or to remain anonymous, call independent charity Crimestoppers on 0800 111 555.