The Dodge County Sheriff’s Office is investigating a couple of vandalism incidents that appear to have been caused by some type of firework. Sheriff Dale Schmidt says a mailbox was damaged Monday night on Spruce Road. Schmidt says a few minutes later there was another report of an explosion and smoke at a portable toilet at the Fish Camp boat launch a short distance away. Schmidt says in both incidents, witnesses reported seeing a new orange colored Ford Mustang leaving the area. Anyone with information is asked to call the Dodge County Sheriff’s Office.