Detectives are investigating the serious assault of a man in Mareeba overnight.
Initial investigations indicate the 35-year-old man was involved in an altercation with a 26-year-old woman at the Mareeba Showgrounds around 11.45pm.
A short time later police were called to Mareeba Dimbulah Road after the man was attacked and located unconscious with paramedics performing first aid.
The victim was transported to Mareeba Hospital before being airlifted to Townsville Hospital in a critical condition.
Police are appealing to any witnesses who were in the area at the time and may not have spoken yet to contact them.
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.