There have been no sightings of a man described as unpredictable with a violent history, Canterbury police say.
Luke James Henry, aged about 31, is wanted in relation to a serious assault on a woman in the Christchurch suburb of Hoon Hay on Friday night.
Police said yesterday that Mr Henry could have travelled as far north as Nelson.
He had been seen driving a red Subaru Impreza, but also had a red Mazda Familia hatchback registered to his name.
Detective Greg Murray said police were still looking for him.