FOX LAKE, Wis. (AP) — Fox Lake police got a little more than they bargained for during a recent prescription drug take-back day. A local resident showed up with a cardboard box containing a live World War II mortar round. Police Chief Jim Rohr said he gently took possession of the box, which had a date of October 1945 on it. He says it was a little unnerving. Rohr took the box to a nearby field and called the Dane County bomb squad. The mortar round was identified as a 50mm high explosive Japanese "knee mortar." Rohr urges anyone who finds such an item to call the police before touching or moving it and officers would come and take a look to determine what should be done. Besides a nearly 70-year-old grenade, Fox Lake police also collected 187 pounds of prescription drugs.