TOWN OF BARTON - Evidence suggests that the cause of an explosion and subsequent fire at a Town of Barton residence Friday was natural gas-related, according to a press release from the Washington County Sheriffâs Office on Monday. However, the investigation is still ongoing at this time. Washington County Sheriffâs Office investigators are working alongside investigators from the West Bend Fire Department and the Wisconsin Division of Criminal Investigation Fire Marshalâs Office. On Friday at approximately 8:15 p.m., the Washington County Sheriffâs Office was notified of an explosion and a house fire at a single-family residence at 3149 Norman Drive.