Four people have been arrested after a knifepoint robbery in Norwich city centre.

One of the victims was slashed with a knife, while the other was hit by a Land Rover in the robbery, which happened at 11.20pm last night.

The victims, aged in their 20s and 30s, were initially approached in All Saints Street, near to John Lewis by two people, one of whom was armed with a knife.

The victims were threatened and attacked, with the victim in his 20s suffering what police described as 'superficial' knife wounds.

And two more people then joined in the attack, arriving in a Land Rover Freelander, which hit the victim who is in his 30s.

Eastern Daily Press: Police tape outside John Lewis in All Saints Street. Pic: Dan GrimmerPolice tape outside John Lewis in All Saints Street. Pic: Dan Grimmer (Image: Archant)

Police said he was not seriously injured.

Cash, jewellery, a mobile phone and a bank card were stolen from the victims, before the attackers all fled in the vehicle which the second group had arrived in.

Neither of the victims were taken to hospital.

Police later arrested four people - three men aged 22, 32 and 37, and a 32-year-old woman, in connection with the incident.

Eastern Daily Press: Supt Terry Lordan, district commander for Norwich police.Picture: Nick ButcherSupt Terry Lordan, district commander for Norwich police.Picture: Nick Butcher (Image: Archant © 2018)

They all remain in custody at Wymondham Police Investigation Centre.

The Land Rover has also been seized.

The area outside John Lewis was sealed off this morning. There was police tape surrounding a bench, cycle rack and flower bed, with a police officer stationed at the scene, alongside two police cars.

Forensics officers examined the scene and the police seal had been lifted by mid-morning.

Norwich Policing Commander, Superintendent Terry Lordan, said: 'Fortunately no one was seriously injured and we have a team of detectives working on this case.

'The area was sealed off while officers carried out scene enquiries and this has now been lifted while the investigation continues. We are keen to hear from anyone who was in the area and may have witnessed the incident.'

Anyone who saw what happened should contact Detective Constable Lee Mariner Norwich CID on 101 or Crimestoppers anonymously on 0800 555 111.