State Police are investigating a stabbing in Calais. Police say a Calais officer found a man walking early this morning and noticed he had a head injury that was bleeding severely.After investigating, the officer found the man had just been involved in a fight outside Scooters, a bar on North Main Street.Police then learned another man involved in the fight had been stabbed.Police say it started as an argument among four men inside the bar. The owner asked the men to take their differences outside, where things escalated into a physical confrontation.Police say 23 year-old Sean Scribner was stabbed in the back. He’s being treated at a local hospital for non-life threateneing injuries. 33 year-old Jeffrey Gagner was also injured in the fight.Police have recovered the knife used in fight and are trying to determine the roles of all the men involved.