A man is in a serious condition in intensive care in Wellington Hospital after an altercation in Martinborough overnight.
A 25-year-old male is in police custody and will be appearing in court on an assault charge in relation to the incident. Further charges are being considered.
Wairarapa police are seeking information from anybody who was in around Broadway Street in Martinborough around midnight on Saturday night.
Anyone with any information should phone Senior Sergeant Brent Murray from the Wairarapa CIB on 027 540 4394 or phone Crimestoppers on 0800 555 111.