Police believe a man who allegedly absconded after a fight in Goonellabah on Friday may have taken a Dunoon woman with him on the run.
They are concerned about the welfare of the woman and say the pair may still be in the Lismore area.
At about 11.20am Friday (June 1) a 28-year-old man was assaulted in Rous Street Goonellabah by another male.
The man was taken to Lismore Hospital and treated for head injuries.
Police wish to speak with 28-year-old Leon Edward King about the matter and a warrant has been issued for his arrest.
They have also been looking for a woman, Hannah Schofield, and police say they are now concerned for her safety after she was found to be missing from her home in Dunoon.
Ms Schofield is described being as 23-years old, 150 to 170cm tall with a medium build. She has a fair complexion with long dark hair. It is believed she was last seen wearing dark clothing.
Mr King is described as being of Aboriginal/Torres Strait Islander appearance, approximately 185cm to 190cm tall, of a large build, with black hair, a black beard and a moustache.
It is believed the pair are still in the Northern rivers region.
Anyone who sees Mr King or Ms Schofield, or believes they know their whereabouts is urged not to approach them but to contact Triple Zero (000) immediately.