A woman was injured in an incident in a Hereford supermarket car park on Friday.
West Mercia Police Detective Sergeant James Moore said: “We were called to Commercial Road at 12.50pm on Friday 5 March to reports of a robbery in Morrisons’ car park.
“Officers attended and found a man and woman had been involved in a violent disorder and the woman suffered knife injuries to her hand.
“The woman, aged 21 from Wales, was arrested on suspicion of conspiracy to supply Class A drugs and has since been bailed. The man, aged 22, also from Wales fled the scene and has today been arrested for the same offence and remains in custody.
“Two men were believed to have fled the scene but were arrested shortly after on the M5. One aged 26 and the other aged 27, both from Northampton, were arrested for conspiracy to commit robbery and drug supply offences and have since been released whilst the investigation continues.
“Enquiries are still ongoing and police are keen to speak to anyone who may have seen a grey Nissan Qashqui in the area at this time. Anyone with information or dashcam footage is urged to contact 101 quoting reference 00248i of 5 March or you can report online through the Tell Us About section of the website. “