The Lake Delton Walmart was closed for more than an hour Thursday following a bomb threat. Authorities said they searched the store and determined it to be safe just around 1pm. It was the second time within a month that the Lake Delton Walmart received a bomb threat. The first one was received on November 1st. Lake Delton officials say detectives are continuing to investigate this incident, and there is not believed to be an imminent danger to the public and Walmart has since returned to normal business.