Authorities who've been searching a farm in Wadena County have discovered bone fragments on the property.
Sheriff's deputies and officials from the Bureau of Criminal Apprehension began the search Monday after getting a warrant to look for human remains, according to a statement from Sheriff Michael Carr.
"Numerous bone fragments were found and have been sent in for analysis concerning the origin of the items found," according to Carr.
The Associated Press reports Carr declined to provide any other information about the search, except to say it is not related to two high-profile missing persons cases: Jacob Wetterling, who has been missing since he was kidnapped from St. Joseph in 1989, or Carla Anderson, who disappeared from Wadena in 1987.
KARE 11 spoke to the owner of the farm, Dan Hansen, who said he was surprised when 50 to 60 law enforcement officers showed up Monday morning with a search warrant and a backhoe.
They dug up an area about the size of a tennis court in an old excavation dump on the 160-acre farm, which is north of Wadena, the Associated Press says.
Hansen told KARE 11 the farm has been in his family since 1950, and added he's confident searchers will not find any human remains on his property.
He said his father ran a zoo on the farm for a while, and he speculated Monday that searchers might find some animal bones left over from when the zoo was in operation.