In July 2021, he was found guilty of the Colorado crimes and sentenced to three consecutive life terms.[37] Matthew Norman Dusseault and Tyler Grenon Stabbing death of 81-year-old Constance Gauthier Woonsocket, Rhode Island, USA 2016-03-23 2018-07-18 Dusseault's DNA matched the crime scene DNA and when interviewed by police, he implicated Grenon.