Lawrence Jay Cannon, 31, was killed on October 16, 2018, inside the New Castle, Pennsylvania, home of Nichole Pumphrey, the woman he was dating. New Castle police found Cannon and Pumphrey dead from gunshot wounds to the head; Pumphrey’s 10-year-old daughter, Amariah Emery, was also fatally shot. Investigators reported no signs of forced entry or a struggle and recovered three .40-caliber shell casings inside the house. Four other children were in the home; investigators later said those surviving children were unharmed and that their statements became important to the case.

A child told authorities that Steven Procopio, who had babysat Pumphrey’s children, was present during the shootings and described seeing Procopio shoot Amariah. Procopio, then 19, was arrested and charged with three counts of criminal homicide. Anthony Mook Cooper, also 19, was wanted and later arrested on homicide, conspiracy, and firearms charges. Prosecutors said the killings occurred during an alleged robbery plan targeting Pumphrey and Cannon.

Cooper pleaded guilty and was sentenced to 15 to 30 years in state prison. Procopio was convicted at trial on counts including second-degree murder for Pumphrey and Amariah and received life imprisonment. Does anyone have information about Cannon’s last known movements or who else might help clarify what happened that night?