A 61-year-old Kybong man remains in a critical condition following a motorcycle crash at Chatsworth on August 20.
Initial investigations indicate just after 9.30am on the Bruce Highway, a motorcycle left the roadway and crashed into a guardrail.
The 61-year-old rider was transported in a critical condition to Gympie Hospital, where he was then airlifted to the Royal Brisbane and Women's Hospital.
The Forensic Crash Unit is investigating the circumstances of the crash.
Anyone with information or relevant dashcam footage is urged to contact police.
If you have information for police, contact Policelink by providing information using the online suspicious activity form 24hrs per day at www.police.qld.gov.au/reporting.
Report crime information anonymously via Crime Stoppers. Call 1800 333 000 or report online at www.crimestoppersqld.com.au.