Emergency services were called to an address on Whipley Bank near to Ripley after a man was discovered with fatal stab injuries in a car. (9.30pm on Sunday 3 August 2014).
A 40-year-old man has been arrested on suspicion of the murder of the 44-year-old man.
Police have reassured local residents that it was an isolated incident and there was no danger posed to the wider public.
While enquiries remain ongoing at the address on Whipley Bank, the B6165 (Ripley to Pateley Bridge road) remains closed to traffic. Motorists are urged to follow local diversions until further notice from the police.
Anyone with information that could assist the investigation should contact North Yorkshire Police on 101, select option 1, and speak to the Force Control Room.
Information can also be passed to Crimestoppers anonymously on 0800 555 111.
Please quote reference 12140130641 when providing information about this incident.