An American citizen from the Connecticut area has been named as the victim in a one vehicle road traffic collision.
Police said Allison Eichner died following the collision in the Causeway Road area of Bushmills on Wednesday.
Detective Inspector Cherith Adair said: “Police received and responded to a report of a collision shortly before 12.30pm.
“Colleagues from the emergency services also attended the scene.
“A female pedestrian aged in her forties was taken to hospital by colleagues from the emergency services, however she sadly died from her injuries.“
One person was arrested at the scene, and remains in custody at this time, assisting with enquiries.