Police have arrested and charged a 35-year-old Portland Road man with one count each of murder and wounding.

UPDATE: CAPE YORK MURDER WITNESSES ATTEMPTED TO SAVE VICTIM'S LIFE

Police alleged around 8.30am yesterday morning, the man joined a 60-year-old man and 65-year-old woman at their camp site in Lockhart River when a fight started.

Police will allege the younger man then stabbed the 60-year-old man in the neck, before stabbing the 65-year-old woman in her lower arm.

Officers responded and a man was taken into custody yesterday afternoon.

The man will appear via video link in the Cairns Magistrates Court today.

If you have information for police, contact the Port Douglas Police Station on (07) 4087 1999 or Policelink on 131 444 or provide information using the online form 24hrs per day.

You can report information about crime anonymously to Crime Stoppers, a registered charity and community volunteer organisation, by calling 1800 333 000 or via crimestoppersqld.com.au 24hrs per day.