The parents of a 16-year-old boy in Michigan said they believe his classmates painted an anti-gay slur on their home, along with an arrow that points to his bedroom, WEYI-TV reported.

Melanie Peabody and her husband tried to remove the graffiti, and they’re speaking out about the incident.

“I’m mad,” Melanie said. “My son’s not safe.”

The family lives in Vienna Township, a town of about 13,000 people in the middle of Michigan. Levi Peabody attends Clio High School.

“It does hurt,” he said. “As much as I don’t want to admit it, it does hurt that someone would dislike me that much to do something to my window.

The family has installed security cameras in their bedrooms as an attempt to catch the culprits, but the also want to send a message that they won’t tolerate the attacks.

“… It’s disgusting,” Melanie said.

The Genessee County Sheriff’s Department said they’re working with school officials to identify potential suspects.