A 36-year-old Christchurch man has been arrested after a man died in an assault on the river bank in Woolston last night.
Police have also named the victim as 41-year-old Simon Prue, also of Christchurch.
Police said detectives had worked through the night and will continue the investigation during the weekend to establish the exact circumstances leading up to the assault and death.
The scene in Ferry Road is likely to be released later today.
Police have asked any witnesses to last night's attack to come forward.