A large burn mark near the center of one of the Irondequoit High School athletic field was caused by vandalism, according to the West Irondequoit School District.
The burn was discovered on the turf last week. The mark is about six to eight feet in diameter.
The school district estimates the cost of repairs will be around $10,000. The work should be done by the end of the month.
Summer camps that reserved the field can still use it. The burned area will be roped off until repairs are made.