Two people have been arrested in connection with a vandalism incident at Norwalk High School, according to police. Classes were canceled Tuesday morning after students found 35 classrooms glued shut and graffiti spray painted throughout the school. Police say the suspects, who are seniors at the school, turned themselves in Thursday night. The names of the students have not been released because of their age, but police say they are facing felony charges. The Norwalk School District superintendent says the stunt began as a senior prank, but ended up costing the city about $20,000 in damages. Both students have been suspended and face an expulsion hearing. Related Information Major prank at Norwalk H.S. leads to early dismissal