Detectives investigating an armed robbery at a Doncaster post office have now made four arrests.
Two men armed with a gun and a machete raided Scawthorpe post office, Amersall Road, Scawthorpe, on Monday, October 22.
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They threatened staff with the weapons and left with a large amount of cash.
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On Thursday, a 39-year-old man was arrested on suspicion of armed robbery and later that night a 27-year-old man was arrested on suspicion of robbery and two women, 34 and 29, were arrested for conspiracy to commit robbery and assisting an offender.
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Anyone with information should call South Yorkshire Police on 101 or Crimestoppers, anonymously, on 0800 555111, quoting incident number 448 of October 22.