Ontario Provincial Police say they seized more than 300 pounds of illegal cannabis during a traffic stop near Lansdowne, Ont. on Wednesday. According to a news release from police, an officer conducted a traffic stop after observing a driver using their phone on Highway 401 near the eastern Ontario community. Officers then discovered and seized approximately 340 pounds of illegal cannabis worth an estimated street value of $680,000, as well as a knife and “items commonly associated with drug trafficking.” Police say Constantin Kontopidis, a 32-year-old from Toronto, has been charged with possession for the purpose of trafficking, carrying a concealed weapon and driving with a handheld communication device. The accused was released form custody and is scheduled to appear before the Ontario Court of Justice in Brockville in December. Those with information that could assist the investigation are asked to contact the Leeds County OPP at 1-888-310-1122. Anonymous tips can be submitted to Crime Stoppers at 1-800-222-8477 or at ontariocrimestoppers.ca.