An armed robber struck at Thurcroft Post Office on Green Arbour Road at 7.15am yesterday.
CRIME: Two in custody and one in hospital after man attacked in Sheffield city centre South Yorkshire Police said he escaped with a quantity of cash.
He was white, of a medium build, was wearing a pale-coloured coat with a hood and was carrying a backpack.
Anyone with information should call 101 and quote incident 237 of March 3.
Crimestoppers can also be contacted on 0800 555 111.