A court appearance was held at Hutt Hospital this afternoon for the woman charged following a stabbing spree in Johnsonville on Wednesday.

The 25-year-old faces four counts of assault with a weapon.

Noel Hudson Garratt was killed in the Wednesday incident in Broderick Road.

The woman entered no plea and was remanded in care pending a psychiatric assessment.

She was granted interim name suppression along with the surviving victims.

Police say more charges are expected "pending the outcome of further inquiries".

A nine-year-old boy hurt during the incident is recovering in Wellington Hospital and is in a stable condition.

Three other victims have been discharged.