Emergency services and police were called to East Street, Casino at about 6am after reports of a stabbing yesterday, Saturday, October 21.
When they arrived, police found a 42 year old man with stab wounds near his stomach.
The man was treated by paramedics and was taken to Lismore Base Hospital in a serious but stable condition.
A crime scene has been established at East Street and an investigation has commenced.
Anyone with information about this incident can contact Crime Stoppers on 1800 333 000.