Alex Stuckey of The Salt Lake Tribune reports nine people who drank raw milk from Heber Valley Milk in the past five months have contracted salmonella.

The Utah Department of Health on Tuesday said health officials currently are investigating the outbreak. A raw milk sample collected from the Wasatch County dairy last week tested positive for Salmonella Saintpaul. But a more recent sample showed no signs of the infection, so the dairy has resumed sales.

Grant Kohler, owner of the dairy, said he is working with the state Department of Agriculture and Food to determine the cause of the outbreak.

“We don’t know what the cause was and we’re not 100 percent sure that it’s our place,” Kohler said. “We will do whatever we need to do to make sure we’re selling a safe product.”