"Police are investigating after a teacher found bags of heroin in the backpack of a 7-year-old student. The incident happened at Quentin Roosevelt Elementary School in Carrick. The school houses grades pre-K to 5. Sources say the 7-year-old kindergarten student cut his finger with a razor blade. His teacher started questioning him and discovered 18 suspected heroin stamp bags in his backpack and locker. Pittsburgh Police brought a drug-sniffing dog into the school Wednesday afternoon to search for heroin that might still be inside the building. No additional drugs were found."