A former administrative intern at the Council Bluffs St. Albert High School has been charged in connection with a high school fire in North Dakota. The Daily NonPareil reports 30-year old Thomas Sander, a Principal at Trinity High School in Dickinson, N.D., faces felony charges of Arson and Endangerment by fire or explosion. Sander was being held in jail Wednesday on $500,000 bond. If convicted, he faces up to 10-years in prison.

The fire, which occurred Monday, heavily damaged the school. Students were given the week off while officials decided how to continue the school year.

While at St. Albert, Sander worked six to eight hours per week for one semester as part of an unpaid administrative practicum for his master’s degree. He was not a school employee, however, and was at the school for about three months.