Authorities have identified two sisters whom they believe are the main suppliers of meth in southwest Wisconsin. According to a Crawford County Sheriff’s Office report, multiple agencies have taken part in a lengthy investigation regarding the distribution of meth across the region. Throughout this case, law enforcement discovered roughly 60 meth users and/or dealers in the area. Two of the main suppliers are 32-year-old Pa Yang and her sister 35-year-old Lisa Yang of Onalaska. Pa Yang has been indicted by a federal grand jury and faces up to 80 years in prison for charges of possession of meth for distribution. Also, during this investigation, Lisa Yang was arrested by Crawford County Sheriff’s deputies with the help of a K9 unit. The narcotics investigation is ongoing with assistance from agencies including the Prairie du Chien Police Department, Richland-Iowa-Grant Drug Task Force, Clayton County Sheriff’s Office, and Mar-Mac Police Department.