Courtesy photo Dubuque Telegraph HeraldBrian Everett Dietrich
30 YOA
Garnavillo, IA
Clayton County
Reported Missing October 30, 1993
Found dead on Indian Isle south of McGregor, IA
Memorial Day weekend,
Saturday, May 28, 1994
He’d planned to take his new baby daughter out trick-or-treating that October night in 1993.
Brian Dietrich — the son of [then] Clayton County Sheriff Verdean Dietrich — was known for his biker lifestyle and “living off the land” in rural Garnavillo, Iowa, but made regular trips across the Mississippi River to Prairie du Chien, Wis., to sell ginseng.
Clayton County in Iowa
That night, according to Lt. Lauren Knutson of the Crawford County Sheriff’s Department, Dietrich — along with his girlfriend and her brothers — was hanging out at the downtown Schooner Bar in Prairie du Chien. “At some point in time,” Knutson told WMTV (NBC) Channel 15 for a story airing May 17, 2009, “there was a scuffle [and] Brian was struck once by one of the brothers.”
The 30-year-old Dietrich headed home, walking toward the bridge connecting Prairie du Chien with Clayton County, Iowa, but never made it home.
Dietrich’s girlfriend reported him missing several days later, insisting he was in the river.
Knutson firmly believed people knew more than what they were saying, and said on a scale of zero to ten, he’d put [his suspicions] at a ten.
Dietrich’s body wouldn’t turn up until the following May — entangled in the roots of Indian Isle.
Indian Isle — a one-mile wooded island on the Mississippi River — could be accessed only by boat within the Crawford County jurisdiction. Home to about 20 seasonal cabin dwellers, the secluded island lay one mile south of the Mississippi River bridge near McGregor, Iowa.
On Saturday, May 28, 1994 — Memorial Day weekend — a suspicious odor led one resident out to the shore to investigate.
He discovered the body on the shore; fully clothed, the man lay face down in the sand. The resident immediately notified the Crawford County (Wis.) Sheriff’s Department.
Garnavillo, Iowa
Joined by officials from the Clayton County (Ia.) Sheriff’s Dept. and the Wisconsin Department of Natural Resources, the deputies examined the body for a cause of death; they could find no wounds, but did find the victim’s clothing and wallet nearby.
The remains were those of Brian Dietrich.
Lt. Knutson, on call at the time, was one of the first responders.
“[The body] appeared to have been in the river for several months,” Knutson told the Dubuque Telegraph Herald in an interview for a story published May 30, 1994.
Dietrich’s body was transported to the University of Wisconsin for an autopsy, and though the coroner eventually ruled the death a drowning, investigators couldn’t shake the feeling they’d had from the very beginning; they strongly believed there was more to this death.
Lauren Knutson retired from the Crawford County Sheriff’s Department in 2006, but never truly left the work behind him.
“This was just too good a case to let go. There were just too many question marks… too many red flags,” he said.
Crawford County Sheriff Jerry Moran and other investigators felt the same way; the final moments of Dietrich’s life had led them to suspect foul play. In May 2009, the Crawford County Sheriff’s Department re-opened the investigation. Few tips trickled in, with none producing any significant breakthrough.
Another year passed, and in June 2010 — with retirement looming in six months — Moran decided to make the case one of his top priorities. “I want to develop a plan,” he told the Telegraph Herald in a story published June 5, 2010. “There isn’t much happening, [but] there are some potential witnesses to be interviewed yet.”
Courtesy photo Dubuque Telegraph HeraldThe following week Moran met with Captain Dale McCullick and the retired Knutson, both of whom had conducted the bulk of the work on the case.
Dietrich’s mother, Bonnie Dietrich, told the Telegraph Herald she’d never been satisfied with the coroner’s ruling and believed she knew the truth about what really happened to her son. She insisted she would never give up hope.
“I’m not gonna settle for someone getting away with it,” she said.
Brian Dietrich was born April 5, 1964. His date of death is listed as Oct. 30, 1993, the day he went missing.
Services were held at 11 a.m. on Wednesday, June 1, 1994, at St. Paul Lutheran Church in Garnavillo. Dietrich was buried in the Guttenberg City Cemetery.
Survivors included his parents, Verdeen and Bonnie LaDage Dietrich of Garnavillo; a daughter, Haley; two sisters, Shelley of Garnavillo and Jan Heck of Dallas, Ga.; maternal grandmother, Mildred LaDage of Guttenberg; and friend, Bonnie Bailey of Guttenberg.
The family asked that memorials be made to the Garnavillo Boy Scout Troop 43 and the Osborne Conservation Center.
If you have any information about this case, please contact the Crawford County (Wis.) Sheriff’s office at 608-326-0241, or Crime Stoppers at 866-779-7297 or 608-326-8933.
Copyright 2012 Iowa Cold Cases, Inc. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
Recent Comments