Nelson Police are seeking witnesses after two French tourists were assaulted in the Buxton Square Carpark on Thursday.
The victims were standing near their vehicle when they were approached by two men, one who demanded money from the tourists for being parked there.
He then punched the 24-year-old victim repeatedly in the head, causing him to lose consciousness.
The second tourist was also punched and knocked to the ground.
When a local man went to the aid of the tourists he too was punched in the face.
The offenders then left the area. However, they were located by police a short distance away and subsequently arrested.
Two men, aged 23 and 25, have both been charged in relation to the incident.
Police believe the incident was witnessed by a number of other people parked in the area.
Anyone with information is asked to contact Detective Sergeant Ian Langridge of Nelson Police on 03 546 3840, or via firstname.lastname@example.org.