Two brothers, a 14-year-old and an 18-year-old, were arrested after the incident and later charged with first-degree murder following a preliminary investigation by Hamilton Police Service. A third individual was arrested but “was interviewed and later released unconditionally once involvement in the investigation was established.” On October 8, 2019, police had announced a 16-year-old male and a 16-year-old female, outstanding suspects, were also arrested and taken into custody on suspicion of first-degree murder. On October 9, 2019, both were released without charge after being questioned lengthily about the homicide. Detective-Sergeant Steve Bereziuk noted in a media release that "based on evidence there is some element of pre-planning [… and premeditation with this homicide."