A 30 year old Whitemark man is in a serious condition following a single vehicle ATV rollover on Flinders Island.

The man presented to the Whitemark Hospital at 8:30pm last night complaining of abdominal pain following the crash at an unknown location.

About 1am today, Tasmania Police were notified by Tasmania Ambulance that the man was being airlifted to the Launceston General Hospital as his condition had deteriorated.

The man, who suffered abdominal injuries, is in a serious but stable condition.

Police are investigating the crash.

Anyone with information should contact Police on 131444 or report anonymously to Crime Stoppers on 1800333000 or crimestopperstas.com.au