DULUTH, MN (KDAL) - A 14 year old boy died at Essentia St. Mary's in Duluth after a swimming accident on Rainy Lake Monday evening. The victim was with a church group that was touring the lake by houseboat when the accident occurred. The youth was airlifted to the Duluth hospital. The victim has been identified by authorities as Briggs Anderson of Fergus Falls, Minnesota. The St. Louis and Koochiching County Sheriff Departments are investigating the incident.