ST. CHARLES, Minn. – A message threatening violence on Friday the 13th was found scrawled in lipstick on a mirror in a girls bathroom at the St. Charles High School. Police were called. Principal Brad Berzinski notified parents that police would have a presence at the school the next few days. Berzinski’s message, in English and Spanish, asked parents for help if they had an idea about the perpetrator. The school has 480 students in Grades 7 to 12.