Niagara Police were called called out to a stabbing at a popular campground in Port Colborne over the weekend.
Officers were called to the basketball court area of Sherkston Shores campground at around 10:30 p.m. Saturday.
Police found a 22-year-old male victim suffering from a serious stab wound.
He was transported to a local hospital for further care, and later flown by Air Ambulance helicopter to an out-of-region hospital.
The initial investigation determined there had been a fight near the basketball court in the campground.
Sherkston Shores Security personnel responded to scene but many of the involved persons had fled.
A person was initially arrested at the scene by NRPS officers but was later released unconditionally.
Detectives are appealing to anyone who may have information to contact them by calling 905-688-4111, option 3, extension 1009046.
Members of the public who wish to provide information anonymously can contact Crime Stoppers of Niagara online.