The police looking for the person who killed a Christchurch prostitute say they have a description of a car the person may have been driving.
Mellory Manning's body was found in the Avon River on 19 December. A post-mortem revealed she had been strangled, beaten and stabbed to death.
The police said she was last seen at about 10.40pm on 18 December, talking to someone in a dark-coloured Ford Falcon with a red stripe down the side.
Ms Manning was not seen leaving in this car, but the police have not ruled out the possibility that the driver could be her killer.
The Prostitutes' Collective is appealing to the media to stay away from a memorial service for Mellory Manning.
The Christchurch regional co-ordinator for the collective, Anna Reed, believes many people from the sex worker community will be put off from paying their respects if media are present.
The service will be held on Monday, at St Luke's church in Manchester St, near where the 27 year-old worked.
Ms Reed said the memorial service for murdered sex worker Susie Sutherland, killed in 2005, was held in the same church.
She understands Ms Manning's family will also hold a private service for her.