Tristan Duchesne, a 35-year-old youth social worker, has been arrested by Longueuil police (SPAL) as part of an investigation into alleged sexual offenses involving a minor. Duchesne, who worked with young people as a social worker for organizations in the Montreal area, could face charges of sexual assault, sexual exploitation, luring and making sexually explicit material available, police said. Investigators believe other people may have relevant information related to the investigation. Longueuil police are asking anyone who believes they may have been a victim of Duchesne, or who has information that could help advance the investigation, to come forward.