A third person has been arrested in relation to an alleged serious assault of a female found on the side of a road in Dome Valley last week.
The woman was found bound and gagged on the roadside last Monday.
Police said a 42-year-old woman was arrested today and will appear in the North Shore District Court tomorrow.
She is the third person to be arrested in relation to the incident.
A 28-year-old woman appeared in the North Shore District Court yesterday facing three charges - two counts of kidnapping and one charge of threatening to kill.