Drugs caused death of Knoll brothers
The deaths of Gregory Knoll, 43, and Jeffrey Knoll, 40, were caused by drug overdoses, according to the final autopsy report. The findings were released Tuesday by St. Croix County Sheriff Dennis Hillstead.
The report said both brothers died on or about May 10 in their Burkhardt apartment. The bodies were not discovered until May 27 when the owner of the building received an anonymous call suggesting something was wrong.