Sarnia Police have arrested an 18 year old male from Corunna and charged him with Mischief and Uttering a Threat to Cause Death in relation to the graffiti incident at SCITS High School earlier this week.  He was arrested today around the noon hour.  He was released on a Promise to Appear with an Undertaking to appear in court on July 31, 2012.   He is a student at the school.