A 56-year-old man from Rossville has been found dead following a single vehicle crash in Cooktown.

Police believe the car crashed sometime on Saturday night but was not found until Sunday afternoon. 

Police were called to the scene of the crash at about 2.40pm where the man was found deceased in his car.

Reports to police say the car had crashed on the Mulligan Highway, approximately one kilometre south of the Annan River Bridge.

It is unclear what caused the crash and investigations by the Forensic Crash Unit are ongoing. 

If you have information for police, contact 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.