Thom Pertler, 47, was booked into the St. Louis County Jail on suspicion of drunken driving Tuesday afternoon. The Duluth News Tribune reports the Carlton County attorney refused to submit to a chemical test of his blood, breath or urine. Pertler has been the county attorney since 2005.

FEMA officials were on Minnesota's North Shore Wednesday to assess the damage caused by last week's Knife River flooding, which is estimated to be between $1 million to $2 million. FEMA is expected to tour flood damage Thursday in Duluth, as well as affected areas in greater St. Louis and Carlton Counties.

Minnesota's cornfields will average 168 bushels an acre this year, according to the U.S. Department of Agriculture. The Pioneer Press reports this would be Minnesota's largest corn crop in state history and make the state the second largest corn producer in the country -- only trailing Iowa.

Kare 11 reports one person was treated for smoke inhalation. Several fire departments responded to the fire at Kurt Die Casting on Hwy. 65. The cause of the fire is under investigation.

Minnetonka-based Tonka Beer Company launched its first beer this spring and plans to donate 100 percent of the profits to help prevent the spread of invasive species in Minnesota waterways. KSTP reports "Big Island Shandy" is sold at more than 100 stores throughout the state. The goal is to donate at least $10,000 this year and twice that amount next year. A second beer is set to hit store shelves in August.

Rochester's Mayo Clinic started construction on a $188 million center that utilizes proton beams to treat cancer. Mayo plans to start building another such center in Phoenix in December. Officials don't yet know whether proton beams are more effective than x-rays for treating cancers. There's only one other place in the United States where cancer patients can go for proton treatment.