A jury found Finnegan, 56, guilty on two counts of first-degree murder, criminally negligent homicide, aggravated rape, and a slew of other charges, for the 2019 death of Paxton, prosecutors said.
The mother and sister were both placed under arrest Thursday by the Lady Lake and Wildwood police departments.
Years before he allegedly committed a brutal carjacking and animal cruelty in Seattle, he was flagged by mental health experts as a "high risk" for violence in a chilling concern that may have become tragically true.
Jeremy Kirch, 45, stands accused of second-degree murder in connection with the death of his 50-year-old girlfriend Elizabeth Gerling, according to the Oneida County Sheriff's Office.
