Update: The St. Louis County Sheriff's Office said Alec Lawrenz's body was recovered from the Temperance River around 1:42 p.m. Monday.
The 18-year-old's remains are being taken to Cook County North Shore Hospital. The incident is under investigation, but they don't suspect foul play.
Lawrenz had recently graduated from Benilde-St. Margaret's in St. Louis Park. The school released a statement Monday about his death, saying he drowned while camping over the weekend.
"He was a wonderful young man, full of life, kind and compassionate," the school added.
The original story is below.
Officials are searching for the body of an 18-year-old man who fell into a gorge and was swept away by a river.
He went through the strong current under a bridge and did not resurface.
The sheriff's office says a number of factors are making the search difficult, including the current, limited visibility under the water, and debris.
The river bottom ranges from 3-10 feet in depth, and there are trees, rocks and concrete with remnants of rebar, which is making "any dragging efforts problematic," the release says. Weather and rising water levels in the river have also made any recovery efforts difficult.
A dive team can't be sent in to find his body because of "dangerous conditions," but officials will use side scan sonar to get a better picture of the bottom of the river, the sheriff's office says.
Lawrenz had recently graduated from Benilde-St. Margaret's High School in St. Louis Park, according to KARE 11.
Temperance River State Park consists of 5,007 acres in Minnesota's arrowhead, near Schroeder. The park sees 275,931 visits annually, the Minnesota Department of Natural Resources says, and is known for rock climbing, fishing, hiking, camping, its rocky landscape and scenic areas.
The park has been the site of at least seven other fatal incidents since the mid-1990s, the Duluth News Tribune reports.