A man threatened staff at Thurcroft Post Office with a knife yesterday morning, before running off with cash.
Police in Rotherham are calling for witnesses after the reported incident took place at around 7.15am on Green Arbour Road.
The man is described as white, of medium build and wearing a pale coat with a hood and carrying a backpack.
South Yorkshire Police are asking witnesses to call 101 quoting incident number 237 of 3 March 2019. You can also call Crimestoppers on 0800 555 111 to give information anonymously.