A criminal complaint has been issued in Waupaca County Court against a teacher in Marion, for alleged sexual contact with a student. 43 year old Timothy A. Gast of Shawano is charged with repeated sexual assault of a child, and 3 counts of child enticement, for alleged sexual contact with a student four years ago, when the girls was 14. The complaint says the student told authorities she also received inappropriate text messages. The student came forward with the allegations after the Marion Police Department gave an internet safety presentation to the students at the high school in April. Gast could face over 25 years in prison if convicted. He is due back in court tomorrow (Tuesday).