Law enforcement officers from two local police agencies have found no evidence that a handwritten, threatening note discovered early Wednesday evening outside St. Clair County TEC poses any risk to TEC students or staff, said officials from the Marysville Police Department and the City of Port Huron Major Crimes Unit. Officials said classes will be held as scheduled Thursday at TEC, on the campus of the St. Clair County Regional Educational Service Agency in Marysville. Police personnel will be on hand during the day as a precaution. As an added security measure, police officials also ask that students attending TEC on Thursday not bring backpacks. The threatening message gave no specifics about any intended target, nor was it specific about how any threat might be carried out, police said. The message was discovered, after classes were over, by a custodian. It was attached to a trash bin sitting outside the building. The custodian followed standard response procedures and immediately notified RESA officials, who called law enforcement. Law enforcement officials searched the building. A bomb-sniffing dog also searched the building. No threatening materials were discovered, police said. TEC offers career and technical education in 13 trades categories. It educates about 800 students from throughout St. Clair County each day. TEC has operated for 37 years. It has never been the site of any type of threatening actions in its history. If any student has information regarding the hand-written threat, please contact the Port Huron Police Major Crimes Unit at 810-984-5383.