Police locate person of interest in murder of Upper Darby HS student.

Police in Upper Darby Township have located a person they were looking to speak with in connection with the stabbing death of 15-year-old Michael Garr. The incident remains under investigation, and no suspects have been identified at this time. Two people seen holding hands on video may have witnessed the crime and could provide clues in the search for a suspect. The Delaware County Fraternal Order of Police Lodge 27 is offering a $10,000 reward for a tip that leads to an arrest.