SOMERSET, Wis. (WFRV) – Authorities are actively investigating a stabbing in St. Croix County that left one teenager dead and four others seriously injured.

The St. Croix County Sheriff’s Office shared that at around 3:47 p.m., on Saturday, deputies responded to reports that several people were stabbed while tubing, just upstream from the STH 35/64 bridge, near Mile Post #9, in the Town of Somerset.

Upon arrival at the scene, officers said they found five victims with stab wounds to their mid-sections. Their injuries ranged from serious to critical.

Authorities identified the five victims as:

  • A 17-year-old boy from Stillwater, Minnesota.
  • A 20-year-old man, from Luck, Wisconsin.
  • A 22-year-old man, from Luck, Wisconsin.
  • A 22-year-old man from Elk River, Minnesota.
  • A 24-year-old woman from Burnsville, Minnesota.

Two of the victims were taken to the hospital via helicopter while two others were taken by ambulance. These victims are all in stable condition, deputies confirmed.

Unfortunately, the fifth victim, identified as a 17-year-old Minnesota boy, died as a result of his injuries.

According to our CBS affiliate in Minnesota, St. Croix County Sheriff Scott Knudson explained in a news conference, that the victims were tubing on the river when the suspect, identified as a 52-year-old Minnesota man, stabbed the individuals.

After the incident, the suspect allegedly fled the scene on foot and was later located at the exit point for tubers on the Apple River.

The suspect was taken into custody without incident and is currently being held at the St. Croix County Jail. At this time investigators are still trying to determine a motive for the stabbings.

This is an ongoing investigation. Officers are asking that anyone who may have gotten video of this incident, prior to or during the event, to contact Investigator John Shilts at (715) 381-4319 or by e-mail at:

Local 5 will continue to update this story as it progresses.